Angelov Y., G. Pashev, G. Totkov, Applying Machine Learning Classifiers in a Database Smart Indexing Algorithm, Scientific Works of the Union of Scientists in Bulgaria-Plovdiv, series C. Тechnics and Technologies, Vol. XIV., ISSN 1311-9419 (Print), ISSN 2534-9384 (On- line), 2017; p. 33-36 (http://www.subplovdiv.com/images/nauchni_trudove/2017_tehnicheski_nauki.pdf )

URL: https://www.researchgate.net/publication/318054794_Applying_Machine_Learning_Classifiers_in_a_Database_Smart_Indexing_Algorithm