Mobile hydraulic support for copper ore mines / Piotr GOSPODARCZYK, Krzysztof KOTWICA, Jadwiga PAWLIK, Kazimierz PAWLIK, Zdzisław IWULSKI, Joachim SOŚNICA // W: 30th International conference of safety in mines research institutes : Johannesburg, South Africa 5–9 October 2003 / SAIMM. — Johannesburg : SAIMM, 2003. — (Symposium Series / The South African Institute of Mining and Metallurgy ; S35). — Opis częśc. wg okł. — S. 427–434. — Bibliogr. s. 434, Abstr.

Summary of a control system for a self-advancing, hydraulic supports for a mining industry / Piotr GOSPODARCZYK, Krzysztof KOTWICA, Kazimierz PAWLIK // W: ICCC'2000 : proceedings of International Carpathian Control Conference : 14th international conference Automated systems of control of technological processes (ASRTP'2000) : 2nd conference on Information and Control Systems of Production (ICSP'2000) : 2. konferencija Automatyzacja maszyn, urządzeń i procesów (APRO) : 25. konference Automatizované systémy řizeni (ASŘ) : High Tatras, Podbanské May 23–26, 2000 / SSAKI Slovak Society for Applied Cybernetics and Informatics ; Faculty BERG Technical University of Košice. — Košice : TU. BERG Faculty, 2000. — S. 411–414. — Abstr.