@article{Lytvyn_V._Definition_2013,
 author={Lytvyn, V. and Moroz, O. and Semotuyk, O.},
 number={No 4},
 howpublished={online},
 journal={ECONTECHMOD},
 year={2013},
 publisher={Lviv Polytechnic National University},
 publisher={Foundry Research Institute in Cracow},
 publisher={Polish Academy of Sciences Branch in Lublin},
 title={Definition of the semantic metrics on the basisof thesaurus of subject area},
}