Title information : Research Inventy : International Journal of Engineering And Science Year, No. : Vol. 10, No. 12, rok 2020 ISSN : ISSN 2278-4721 (e) Collective Record/Entry : \q12**1 0086197 \q Research Inventy References : \q2479**1 stu_us_cat*0086198*xcla \q (1) - článok