1. The reflectance and coking behaviour of vitrinite-semifusinite transition material;Bennet;Fuel,1968
2. Reflectance of thermally metamorphosed coals;Chandra;Fuel,1963
3. Magmatic intrusion in Lower Namurian in the Marklowice region, Upper Silesian Coal Basin Poland;Chodyniecka;Ann. Soc. Geol. Pol.,1972
4. Die Erscheinungen der Kontaktmetamorphose in der Kohlengrube Jastrzebie;Gabzdyl;Zesz. Nauk. Politech. Slask.,1964
5. Volcanism phenomena in the Michak̵owice overthrust and Oro̵wski fold in the NW part of the Upper Silesian Coal Basin;Gabzdyl;Przegl. Geol.,1969