@ARTICLE{Levanichev_Vitaliy_Study_2014,
 author={Levanichev, Vitaliy},
 number={No 1},
 journal={Teka Commission of Motorization and Power Industry in Agriculture},
 howpublished={online},
 year={2014},
 publisher={The Lublin Branch of the Polish Academy of Sciences},
 title={Study of multi-layer flow in coextrusion processes},
}