@ARTICLE{Fedasyuk_D._Variables_2014,
 author={Fedasyuk, D. and Yakovyna, V. and Serdyuk, P. and Nytrebych, O.},
 number={No 2},
 journal={ECONTECHMOD},
 howpublished={online},
 year={2014},
 publisher={Polish Academy of Sciences Branch in Lublin},
 publisher={Lviv Polytechnic National University},
 publisher={Foundry Research Institute in Cracow},
 title={Variables state-based softwareusage model},
}