An exact root-free method for the expected queue length for a class of discrete-time queueing systems. - Anna Oblakova; Ahmad Al Hanbali; Richard J. Boucherie; Jan-Kees C. W. van Ommeren; W. H. M. Zijm (Queueing Syst. Theory Appl., 2019)

Roots, Symmetry, and Contour Integrals in Queuing-Type Systems. - Anna Oblakova; Ahmad Al Hanbali; Richard J. Boucherie; Jan-Kees C. W. van Ommeren; W. H. M. Zijm (SIAM J. Appl. Math., 2021)