Prokopenko, Igor, and Igor Martynchuk. “OPTIMIZATION OF SMOOTHING PARAMETER BY KERNEL ESTIMATION OF PROBABILITY DENSITY DISTRIBUTION”. Proceedings of National Aviation University (archive) 61, no. 4 (December 10, 2014): 87–91. Accessed June 14, 2026. http://jrnl.kai.edu.ua/index.php/visnik/article/view/7592.