Z. KÁSA, 200 ÉVE SZÜLETETT BOLYAI JÁNOS - 200 DE ANI DE LA NAŞTEREA LUI JÁNOS BOLYAI - 200 YEARS SINCE THE BIRTH OF JÁNOS BOLYAI. Presa Universitară Clujeană, 2002. Accessed: May 17, 2026. [Online]. Available: https://editura.ubbcluj.ro/index.php/puc/catalog/book/430