Performance analysis of an M/G/1 queue with bi-level randomized (p, N1, N2)-policy Xinyu Kuang, Yinghui Tang, Miaomiao Yu and Wenqing Wu RAIRO-Oper. Res., 56 1 (2022) 395-414 Published online: 10 February 2022 DOI: 10.1051/ro/2022008