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+@misc{db-core,
+	title = {Основы технологий баз данных},
+	year = {2020},
+	author = {Б. А. Новиков, Е. А. Горшкова, Н. Г. Графеева;},
+	month = may,
+	language = {russian},
+	note = {[Online; accessed 1. May 2023]},
+	url = {https://www.postgrespro.ru/education/books/dbtech}
+        pages = 582,
+}