@ARTICLE{Hejft_Roman_Innovations_2013,
 author={Hejft, Roman and Obidziński, Sławomir},
 number={No 2},
 journal={Teka Commission of Motorization and Power Industry in Agriculture},
 howpublished={online},
 year={2013},
 publisher={The Lublin Branch of the Polish Academy of Sciences},
 title={Innovations in the construction of pelleting and briquetting devices},
}