On three methods for bounding the rate of convergence for some continuous–time Markov chains
Zeifman, Alexander, Satin, Yacov, Kryukova, Anastasia, Razumchik, Rostislav, Kiseleva, Ksenia, Shilova, Galina
Bounds on the rate of convergence for one class of inhomogeneous Markovian queueing models with possible batch arrivals and services
Zeifman, Alexander, Razumchik, Rostislav, Satin, Yacov, Kiseleva, Ksenia, Korotysheva, Anna, Korolev, Victor