2021, Volume 6, pages 1-6:
Opportunities for Enhancement of Competitiveness in Forestry in Bulgaria

Konstantin Kolev, Date of publication: 15 July 2021 PDF

2021, Volume 6, pages 7-14:
An e ective approach to solve a nonsymmetric algebraic Riccati equation

Ivan Ivanov, Hongli Yang, Date of publication: 30 October 2021 PDF