Valatkaitė, Irma, and Olegas Vasilecas. “Deriving Active Database Triggers from Business Rules Model With Conceptual Graphs”. Lietuvos matematikos rinkinys 42, no. spec. (December 20, 2002): 289–293. Accessed May 20, 2024. https://www.journals.vu.lt/LMR/article/view/32912.