Kiseliova, Danutė, and Arkadijus Kiseliovas. “Diagnostics of the Achievements in Mathematics of the Fourth-Formers Gifted for the Subject”. Lietuvos matematikos rinkinys 40, no. spec. (December 18, 2000): 215–219. Accessed February 2, 2026. https://www.journals.vu.lt/LMR/article/view/35128.