Baran, P., Cygankiewicz, J., Krzyżanowski, A., & Zarębska, K. (2013). Sorption of saturated and unsaturated hydrocarbons on selected coal sample from the Pniówek mine. Geology, Geophysics and Environment, 39(4), 341. https://doi.org/10.7494/geol.2013.39.4.341