T. GEORGIEV, D. DETERMINISTIC SQEMA AND APPLICATION FOR PRE-CONTACT LOGIC. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 103, p. 149–176, 2016. Disponível em: https://stipendii.uni-sofia.bg/index.php/fmi/article/view/61. Acesso em: 4 dec. 2024.