Vietrova, Halyna Viktorivna, and Viktor Oleksiiovych Huzhva. 2018. “ANALYSIS OF THE MARKOWITZ’S AND TOBIN’S MODELS FOR SECURITIES PORTFOLIO CONSTRUCTION”. Bulletin of National Technical University "KhPI". Series: System Analysis, Control and Information Technologies 1320 (44):36-41. https://doi.org/10.20998/2079-0023.2018.44.07.