Bedeutung der polnischen Steinkohle für die EU-Wirtschaft — Importance of Poland's hard coal to the EU economy / Piotr CZAJA, Henryk Paszcza // W: Kolloquium Ressourcen und Umwelt 2006 – Kohle und China : 30. und 31. März 2006, Freiberg = Conference Resources and environment 2006 – coal and China / Hrsg. Christian Buhrow, Heinz Norbert Schächter, Reinhard Schmidt. — Freiberg : TU Bergakademie, 2006. — ISBN10: 3-935797-31-1. — S. 135–148 [tekst niem.], 149–162 [tekst ang.]. — Bibliogr. s. 147–148, 161–162, Abstr.. — Tekst ger.-ang.

Causes and effects of uncontrolled water inrush into a decommissioned mine shaft / Krzysztof POLAK, Kazimierz RÓŻKOWSKI, Piotr CZAJA // Mine Water and the Environment ; ISSN 1025-9112. — 2016 vol. 35 iss. 2, s. 128–135. — Bibliogr. s. 134–135, Abstr.. — Publikacja dostępna online od: 2015-07-31. — tekst: http://goo.gl/GZxmoh

Education of personnel for mining industry of Vietnam at the Faculty of Mining and Geoengineering AGH University of Science and Technology in Krakow / Krzysztof BRODA, Piotr CZAJA, Marek BOROWSKI // W: VIET-POL 2015 : second international conference on Scientific research cooperation between Vietnam and Poland in earth sciences : [Hanoi, Vietnam, 5\textsuperscript{th}–6\textsuperscript{th} November 2015] / Hanoi University of Mining and Technology ; AGH University of Science and Technology. — Vietnam : Bach Khoa Publishing House, [2015]. — Na s. red.: cop. 2014. — ISBN: 978-604-938-550-6. — S. 1–7. — Bibliogr. s. 7

Estimation of stability of selected caverns in Wieliczka salt mine with numerical methods / M. CAŁA, P. CZAJA, D. FLISIAK, M. KOWALSKI // W: Mechanical characteristics of rock : [2\textsuperscript{nd} International Protodyakonov-Colloquium : 2\textsuperscript{nd} and 3\textsuperscript{rd} December 2009] / ed. Carsten Drebenstedt ; TU Bergakademie Freiberg, International University of Resources. — Freiberg : Medienzentrum der TU Bergakademie Freiberg, [2010]. — (Scientific Reports on Resource Issues ; ISSN 2190-555X ; Vol. 2). — S. 140–150. — Bibliogr. s. 149–150

Mining and reclamation in Poland / Ryszard UBERMAN, Piotr CZAJA, Anna OSTRĘGA // W: 2. Internationaler Bergbau und Umwelt Sanierungs Congress : 1.–3. September 2010, Dresden / Lausitzer und Mitteldeutsche Bergbau-Verwaltungsgesellschaft mbH. — [Dresden : LMBV], [2010]. — Publikacja wydana w formie skoroszytu. — S. 1–26 [numeracja całości nieciągła]. — Bibliogr. s. 26

Mining in Poland – history and future / Antoni TAJDUŚ, Piotr CZAJA, Marek CAŁA // W: International Mining Forum 2010 : mine safety and efficient exploitation facing challenges of the 21\textsuperscript{st} century : 19–21 September 2010, Huainan, China / eds. Liu Zegong [et al.]. — London : CRC Press Tylor & Francis Group, cop. 2010. — ISBN: 978-0-415-59896-5. — S. 69–80. — Bibliogr. s. 79–80, Abstr.

Monitoring satelitarny GPS estakady przenośnikowej „Stefanów” – „Bogdanka” — The application of the GPS system for monitoring of conveyor trestle "Stefanów" – "Bogdanka" / Piotr CZAJA, Edward STEWARSKI, Paweł KAMIŃSKI // W: Zborník prednášok z medzinárodnej konferencie : nová surovinová politika – progresívne technológie v baníctve, geológii a životnom prostredí : Demänovská Dolina - Slovak Republic, 13–14 október 2014 = Conference proceedings from the international conference : the new mineral policy – progressive technologies in mining, geology and environment / Slovenská Banícka Spoločnosť, člen ZSVTS. — Slovak Republik : [s. n.], [2014]. — ISBN: 978-80-970521-4-0. — S. 123–132. — Bibliogr. s. 132

New generation concrete in underground constructions / P. CZAJA, J. HYDZIK // W: Scientific reports on Resource issues 2010 : selected papers of the IUR Partner Universities 2008–2009, Vol. 1 / red. IUR Office. — Freiberg : TU Bergakademie, [2010]. — ISBN: 978-3-86012-394-2. — S. 238–247. — Bibliogr. s. 247, Abstr.

New generation concrete – new approach in designing of underground structures / P. CZAJA, J. HYDZIK // W: New techniques and technologies in mining : proceedings of the School of undeground mining : Dnipropetrovs'k, Ukraine, 12–18 September 2010 / eds. Volodymyr Bondarenko, Iryna Kovalevs'ka, Roman Dychkovs'kyy. — London : CRC Press Taylor & Francis Group, cop. 2010. — ISBN: 978-0-415-59864-4. — S. 137–144. — Bibliogr. s. 144, Abstr.

New structure of shafts constructed in rock mass with significantly strong rheological properties / CZAJA P., KAMIŃSKI P. // W: 23rd World Mining Congress [Dokument elektroniczny] : held in conjunction with ISARC 2013 (International Symposium on Automation and Robotics in the Construction and Mining Industries) : August 11–15 2013, Montreal / Canadian Institute of Mining, Metallurgy and Petroleum. — Wersja do Windows. — Dane tekstowe. — [Canada] : Canadian Institute of Mining, Metallurgy and Petroleum, cop. 2013. — Dysk Flash. — S. [1–9]. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. [9], Abstr.

Polish experience in shaft deepening and mining shaft hoists extending on the example of the Leon shaft IV in the Rydułtowy mine / P. CZAJA, P. KAMIŃSKI, J. Olszewski, P. Bulenda // W: 25\textsuperscript{th} World Mining Congress [Dokument elektroniczny] : [19–22 June], 2018, Astana, Kazakhstan. — Wersja do Windows. — Dane tekstowe. — [Kazakhstan : s. n.], [2018]. — (World Mining Congress Proceedings ; ISSN 2663-2993). — S. [72–81]. — Wymagania systemowe: Adobe Reader. — Tryb dostępu: http://files.iteca.kz/web/download/wmc/2018/Processing/Underground_mining.pdf [2018-09-12]. — Bibliogr. s. 81, Abstr.. — Publ. w cz.: Underground mining

Polish experiences in design of treatment of disused mine shafts / Piotr CZAJA // Annual of the University of Mining and Geology “St. Ivan Rilski” – Sofia ; ISSN 1312-1820. Pt. 2: Mining and mineral processing. — 2004 vol. 47, s. 233–238. — Bibliogr. s. 238, Abstr., Rez.

Polish experiences in handling water hazards during mine shaft sinking / Piotr CZAJA, Paweł KAMIŃSKI, Artur Dyczko // W: Mining techniques – past, present and future / ed. by Abhay Soni. — London : IntechOpen, 2021. — ISBN (eBook) 978-1-83962-370-7. — ISBN: 978-1-83962-368-4 ; e-ISBN: 978-1-83962-369-1. — S. 97–107. — Bibliogr. s. 107, Abstr.. — Dostęp również online: {https://www.intechopen.com/books/mining-techniques-past-present-and-future/polish-experiences-in-handling-water-hazards-during-mine-shaft-sinking} [2021-03-29]

Preliminary work on the new lining construction for the shafts passing through salt rock massif / Piotr CZAJA, Paweł KAMIŃSKI // W: SGEM 2018 : 18\textsuperscript{th} international multidisciplinary scientific geoconference : 2 July–8 July, 2018, Albena, Bulgaria : conference proceedings. Vol. 18, Exploration and mining. Iss. 1.3, Science and technologies in geology, exploration and mining. — Sofia : STEF92 Technology Ltd., cop. 2018. — (International Multidisciplinary Scientific GeoConference SGEM ; ISSN 1314-2704). — ISBN: 978-619-7408-37-9. — S. 669–676. — Bibliogr. s. 676, Abstr.. — Toż w: SGEM 2018 [Dokument elektroniczny] : 18\textsuperscript{th} international multidisciplinary scientific conference on Earth & geosciences : conference proceedings : full collection of papers. — Wersja do Windows. — Dane tekstowe. — Sofia : STEF92 Technology Ltd., cop. 2018. — 1 dysk optyczny. — (International Multidisciplinary Scientific GeoConference SGEM ; ISSN 1314-2704). — S. 669–676. — Wymagania systemowe: Adobe Reader ; napęd CD-ROM. — Bibliogr. s. 676

Present state and prospects of lignite extraction in Poland / A. TAJDUŚ, W. KOZIOŁ, P. CZAJA, P. KAWALEC // W: ISCSM 2006 : 8\textsuperscript{th} International Symposium Continuous Surface Mining : Aachen, September 24\textsuperscript{th}–27\textsuperscript{th} 2006 : proceedings / RWTH Aachen University. Department of Mining Engineering III, DEBRIV. Bundesverband Braunkohle. — Aachen : RWTH Aachen. Institut für Bergbaukunde III, 2006. — Opis częśc. wg okł.. — S. 51–59. — Bibliogr. s. 59, Abstr.

Proecological technology utilization of methane from mines / Piotr CZAJA, Stanisław NAWRAT, Sebastian NAPIERAJ // W: International Mining Forum 2010 : mine safety and efficient exploitation facing challenges of the 21\textsuperscript{st} century : 19–21 September 2010, Huainan, China / eds. Liu Zegong [et al.]. — London : CRC Press Tylor & Francis Group, cop. 2010. — ISBN: 978-0-415-59896-5. — S. 51–57

Sistema podgotovki kadrov dlâ gornodobyvaûšej promyšlennosti v Pol'še na primere fakul'teta gornogo dela Gorno-metallurgičeskoj akademii v Krakove (AGH) — System of personnel training for mining industry in Poland in terms of the Faculty of Mining and Geoengineering at the AGH University and Technology, Krakow / P. CZAJA // Gornyj žurnal ; ISSN 0017-2278. — 2018 no. 6, s. 97–102. — Bibliogr. s. 102, Abstr.

The aspects of educating engineers from Vietnam at the AGH University of Science and Technology in Cracow / Marek BOROWSKI, Marek CAŁA, Piotr CZAJA // W: ESASGD 2016 : international conferences on Earth sciences and sustainable geo-resources development : Hanoi, November 12–15, 2016 : program book / Hanoi University of Minning and Geology. — [Hanoi] : Transport Publishing House, 2016 + CD. — e-ISBN: 978-604-76-1171-3. — S. 224. — Pełny tekst na dołączonym CD. — S. 1–9. — Bibliogr. s. 9, Abstr.

The strategy of lignite mining industry in Poland in the first half of 21st century / Antoni TAJDUŚ, Piotr CZAJA, Marek CAŁA, Zbigniew KASZTELEWICZ // W: 22\textsuperscript{nd} World Mining Congress & Expo : 11–16 September 2011, Ístanbul, Vol. 2 / ed. Şinasi Eskikaya ; UCTEA The Chamber of Mining Engineers of Turkey. — Ankara : Aydo\v{g}du Ofset, cop. 2011. — Dod.: ISBN: 978-605-01-0146-1 (całość). — Opis częśc. wg okł.. — ISBN: 978-605-01-0148-5. — S. 101–106. — Bibliogr. s. 106, Abstr.