@ARTICLE{Olajossy_Andrzej_Method_2012,
 author={Olajossy, Andrzej},
 number={No 2},
 journal={Archives of Mining Sciences},
 howpublished={online},
 year={2012},
 publisher={Committee of Mining PAS},
 title={Method of Effective Use of Methane and Nitrogen Separated from Natural Gases / Metody Efektywnego Wykorzystania Metanu i Azotu z Naturalnych Gazów},
 URL={http://journals.pan.pl/Content/92813/PDF/10267-Volume57_Issue2-13_paper.pdf},
 doi={10.2478/v10267-012-0029-y},
}