BORISOVITCH, J.; BADOJEV, A. The evaluation of resolvent of generating operator for the linear systems with delay. Lithuanian Mathematical Journal, [S. l.], v. 8, n. 2, p. 233–236, 1968. DOI: 10.15388/LMJ.1968.20211. Disponível em: https://www.zurnalai.vu.lt/LMJ/article/view/20211. Acesso em: 8 jun. 2025.