%0 Journal Article %A Artalejo Rodríguez, Jesús Manuel %A López Herrero, María Jesús %T On the distribution of the number of retrials %D 2007 %@ 0307-904X %U https://hdl.handle.net/20.500.14352/49972 %X We consider queuing systems where customers are not allowed to queue, instead of that they make repeated attempts, or retrials, in order to enter service after some time. We obtain the distribution of the number of retrials produced by a tagged customer, until he finds an available server. %~