1.
Azalov P, Dimitrov V. $CLIP^{++}$: an object-oriented extension of a relational DBMS. Ann. Sofia Univ. Fac. Math. and Inf. [Internet]. 1993 Dec. 12 [cited 2024 Nov. 24];85:107-19. Available from: https://ftl5.uni-sofia.bg./index.php/fmi/article/view/459