A MOTION OF A FAST SPINNING RIGID BODY ABOUT A FIXED POINT IN A SINGULAR CASE. Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics, [S. l.], v. 90, p. 149–164, 1998. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/293. Acesso em: 15 dec. 2025.