@ARTICLE{Brożek_Marian_The_2003, author={Brożek, Marian and Oruba-Brożek, Ewa}, number={No 1}, journal={Archives of Mining Sciences}, pages={133-147}, howpublished={online}, year={2003}, publisher={Committee of Mining PAS}, type={Article}, title={The effect of surface-active compounds on the tensile strength of limestone and porphyry particles}, URL={http://czasopisma.pan.pl/Content/131896/PDF-MASTER/9_MINING_48_1_2003_Brozek_EFFECT.pdf}, }