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
2021, Volume 6, pages 15-24: SARIMA based methodology for forecast of COVID-19 confirmed accumulated cases in Bulgaria Danail Sandakchiev, Date of publication: 30 November 2021 PDF
