@article{Winnicki_M._Examination_2011,
 author={Winnicki, M. and Zwierzchowski, M. and Ambroziak, A. and Laska, P. and Lachowicz, M. and Leśniewski, J.},
 number={No 4 December},
 howpublished={online},
 journal={Archives of Metallurgy and Materials},
 year={2011},
 publisher={Institute of Metallurgy and Materials Science of Polish Academy of Sciences},
 publisher={Commitee on Metallurgy of Polish Academy of Sciences},
 title={Examination of Friction Coefficient in Friction Welding Process of Tubular Steel Elements},
 doi={10.2478/v10172-011-0107-8},
}