East Meets West – International Conference & Exhibition – Modern exploration and improved oil and gas recovery methods, Cracow, 1–4 September 1999, Poland / Jadwiga JARZYNA, Roman SEMYRKA // Oil and Gas News from Poland / Polish Oil and Gas Company. — 1999 vol. 9 spec. iss. for the 61st EAGE Conference & Technical Exhibition, Helsinki 7–11 June 1999, s. 9–12

Reservoir properties distribution of Zechstein Main Dolomite formation and its petroleum source-rock potential in Western part of Polish Lowland / Roman SEMYRKA, Wojciech STRZETELSKI, Grażyna SEMYRKA // Oil and Gas News from Poland / Polish Oil and Gas Company. — 1999 vol. 9 spec. iss., s. 31–43. — 61\textsuperscript{st} EAGE Conference & Technical Exhibition : Helsinki, 7–11 June 1999