INVESTIGATION OF N-POLICY MARKOVIAN QUEUEING SYSTEM WITH DESPONDENT ARRIVALS, RETAINMENT OF RENEGED CUSTOMERS AND CONTROLLABLE ARRIVAL RATES. Journal of Pharmaceutical Negative Results, [S. l.], p. 1845–1854, 2022. DOI: 10.47750/pnr.2022.13.S06.243. Disponível em: https://mail.pnrjournal.com/index.php/home/article/view/2066.. Acesso em: 15 oct. 2025.