Mathematical description of air cooling using a mining diaphragm cooler taking into consideration the condensation of water vapour / Wacław Dziurzyński, Stanisław NAWRAT, Bernard NOWAK, Janusz ROSZKOWSKI // W: Proceedings of the 8\textsuperscript{th} U.S. Mine Ventilation Symposium / ed. Jerry C. Tien ; University of Missouri–Rolla. — [USA] : [s. n.], [1999]. — S. 375–381. — Bibliogr. s. 381, Abstr.

Model research into retentive reservoirs of methane in coal mines / J. Berger, W. Dziurzyński, St. NAWRAT, J. ROSZKOWSKI // W: Mine ventilation : proceedings of the tenth US/North American mine ventilation symposium : 16–19 May 2004, Anchorage, Alaska, USA / eds. R. Ganguli, S. Bandopadhyay. — Leiden [etc.] : A. A. Balkema Publishers, 2004. — S. 271–275. — Bibliogr. s. 274–275, Abstr.

The current state and prospects for the utilization of methane in Poland's coal mines / S. NAWRAT, J. ROSZKOWSKI // W: Mine ventilation : proceedings of the North American/nineth US mine ventilation symposium : Kingston–Ontario 8–12 June 2002 / ed. Euler de Souza. — London : CRC Press, 2002. — S. 471–475. — Abstr.