Rutkauskas, Aleksandras Vytautas, and Viktorija Stasytytė. “Optimal Portfolio Search Using Efficient Surface and Three-Dimensional Utility Function”. Technological and Economic Development of Economy 17, no. 2 (June 24, 2011): 291-312. Accessed July 7, 2024. https://jeelm.vgtu.lt/index.php/TEDE/article/view/5324.