FRENŢIU, Militon; POP, F. Horia. KEPT 2009 KNOWLEDGE ENGINEERING PRINCIPLES AND TECHNIQUES . [s.l.] : Presa Universitară Clujeană,2009. Disponível em: https://editura.ubbcluj.ro/index.php/puc/catalog/book/943. Acesso em: 16 mar. 2026.