K. JEGANATHAN; C. SUGAPRIYA; M. NITHYA. Study on an Inventory Model with Retrial Customer and Two Heterogeneous Servers Including One with Multiple Vacations. Current Topics on Mathematics and Computer Science Vol. 3, [S. l.], p. 61–71, 2021. DOI: 10.9734/bpi/ctmcs/v3/10318D. Disponível em: https://stm.bookpi.org/CTMCS-V3/article/view/2047. Acesso em: 4 jun. 2026.