Artalejo Rodríguez, Jesús ManuelLópez Herrero, María Jesús2023-06-202023-06-202007-030307-904X10.1016/j.apm.2005.11.008https://hdl.handle.net/20.500.14352/49972This work was supported by the project MTM2005-01248.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.engjournal articlehttp://www.sciencedirect.com/science/article/pii/S0307904X05002441http://www.sciencedirect.com/restricted access519.8Repeated attemptsRetrial queueTagged customerWaiting timeInvestigación operativa (Matemáticas)1207 Investigación Operativa