@ARTICLE{Żółkiewicz_Z._Methods_2013,
 author={Żółkiewicz, Z. and Pysz, S. and Nowak, M. and Gwiżdż, A.},
 number={No 1},
 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={Methods of porosity elimination from valve corps casting made of bronze},
}