@ARTICLE{_Contents_2020,
 volume={vol. 41},
 number={No 4},
 journal={Chemical and Process Engineering},
 pages={309-310},
 howpublished={online},
 year={2020},
 publisher={Polish Academy of Sciences Committee of Chemical and Process Engineering},
 type={Contents},
 title={Contents of Chemical and Process Engineering Vol. 41, 2020},
 URL={http://journals.pan.pl/Content/119372/PDF-MASTER/art07.pdf},
}