@ARTICLE{Kolodyazhniy_Pavel_Ultrasonic_2013,
 author={Kolodyazhniy, Pavel},
 number={No 4},
 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={Ultrasonic testing of discontinuties of metal of gear blanks of rolling stock},
}