HAYKAZYAN, L. A. . The Degree of Unsolvability of the Completion Semantics for General Logic Programs. Mathematical Problems of Computer Science, [S. l.], v. 36, p. 7–12, 2021. Disponível em: http://mpcs.sci.am/index.php/mpcs/article/view/260. Acesso em: 21 may. 2024.