Popov, B. S. “SUR UNE CONDITION D’INTEGRABILITE DE D’ALEMBERT RELATIVE A L’EQUATION DIFFERENTIELLE DE LA BALISTIQUE”. Matematichki Bilten 1, no. 1 (January 1, 1950). Accessed June 13, 2026. https://bilten.smm.org.mk/index.php/bilten/article/view/1130.