2nd International Postgraduate Conference on Industrial Engineering and Engineering Management 2016, Langkawi, Malaysia.
IPN Education Group.
2016.
P. 21-22
3d International Multidisciplinary Scientific Conference on Soсial Sciences & Arts SGEM 2016 Proceedings. Book 1. Vol. 1..
STEF92 Technology Ltd.
Vol. 1.
2016.
P. 701-709