%0 Journal Article %T On the single-server retrial queue %A Djellab Natalia V. %J Yugoslav Journal of Operations Research %D 2006 %I University of Belgrade %R 10.2298/yjor0601045d %X In this work, we review the stochastic decomposition for the number of customers in M/G/1 retrial queues with reliable server and server subjected to breakdowns which has been the subject of investigation in the literature. Using the decomposition property of M/G/1 retrial queues with breakdowns that holds under exponential assumption for retrial times as an approximation in the non-exponential case, we consider an approximate solution for the steady-state queue size distribution. %K Retrial queue %K stochastic decomposition %K breakdown %K embedded Markov chain %U http://www.doiserbia.nb.rs/img/doi/0354-0243/2006/0354-02430601045D.pdf