Bioenergy potential in Poland / Adam GUŁA, co-authors: Tomasz MIROWSKI, Wojciech Kalawa, Wojciech Sajdak // W: Mitteleuropäische Biomassekonferenz 2011 : 26.–29. Jänner, Graz, Österrich : Tagungsband = Central European Biomass Conference 2011 : 26\textsuperscript{th}–29\textsuperscript{th} January, Graz, Austria : proceedings. — [Austria : s. n.], [2011]. — Opis wg okł.. — S. 27

Energy use of solid biomass in Poland – problems and solutions / Adam GUŁA, Tomasz MIROWSKI, Anna Polak // Acta Biochimica Polonica ; ISSN 0001-527X. — 2011 vol. 58 Suppl. 4, s. 53. — A. Polak - dod. afiliacja: The Krakow Institute of Sustainable Energy. — IV Congress of Polish biotechnology and IV EUROBIOTECH : „Four colours of biotechnology” : Central European congress of life sciences : Krakow, Poland, October 12th–15th 2011 : abstracts. — tekst: http://www.actabp.pl/pdf/Supl4_11/Session_5.pdf