Son NP, Uyen PH, Thien ND. On some nonlinear dependence structure in portfolio design. VNUHCM Journal of Economics, Law and Management [Internet]. 28Dec.2018 [cited 9May2025];2(1):91-7. Available from: http://stdjelm.scienceandtechnology.com.vn/index.php/stdjelm/article/view/505