[1]
S. G. Suvorov, “Coleman Principles and Krasnosel’skii Genus in Eigenfunction Problems”, Ukr. Mat. Zhurn., vol. 53, no. 7, pp. 983–992, Jul. 2001, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/4318