@ARTICLE{Pukach_P._Qualitative_2013,
 author={Pukach, P. and Kuzio, I. and Sokil, M.},
 number={No 1},
 journal={ECONTECHMOD},
 howpublished={online},
 year={2013},
 publisher={Polish Academy of Sciences Branch in Lublin},
 publisher={Lviv Polytechnic National University},
 publisher={Foundry Research Institute in Cracow},
 title={Qualitative methods for research of transversal vibrationsof semi-infi nite cable under the action of nonlinear resistance forces},
}