1. A. W. Bowman, “A comparative study of some kernel-based nonparametric density estimators,” J. Stat. Comput. Simul. 21, 313–327 (1982). https://doi.org/10.1080/00949658508810822
2. Ya. Z. Cypkin, Fundamentals of the Theory of Learning Systems (Nauka, Moscow, 1970).
3. A. A. Dorofeyuk, “Automatic classification algorithms (overview),” Avtom. Telemekh. 12, 78–113 (1971).
4. A. A. Dorofeyuk, “Methodology of expert classification analysis in the management and processing of complex data (history and prospects of development),” Probl. Upr. 3 (1), 19–28 (2009).
5. S. Dutta, “Cross-validation Revisited,” Commun. Stat. Simul. Comput. 45, 472–490 (2016). https://doi.org/10.1080/03610918.2013.862275