RAMAMURTHY, Bina; NGHĨA, Vũ; THI, Vũ Đức. Some properties of choice functions. <b>Journal of Computer Science and Cybernetics</b>, <i>[S. l.]</i>, v. 18, n. 1, 2012. DOI: 10.15625/1813-9663/18/1/2407. Disponível em: https://jcc.vast.vn/jcc/article/view/2407. Acesso em: 4 nov. 2025.