IVNITZKY, V. Investigation of non-stationary characteristic of one class of singleserver service systems. Lithuanian Mathematical Journal, [S. l.], v. 12, n. 1, p. 115–128, 1972. DOI: 10.15388/LMJ.1972.21084. Disponível em: https://www.journals.vu.lt/LMJ/article/view/21084.. Acesso em: 30 apr. 2024.