Banionis, Juozas. “Bronislovas Ketarauskas (1905–1978) As the Exile Author of a Textbook of Higher Mathematics”. Lietuvos matematikos rinkinys 48, no. proc. LMS (December 21, 2008): 165–168. Accessed August 30, 2026. https://journals.vu.lt/LMR/article/view/18085.