%0 Journal Article %A Artalejo Rodríguez, Jesús Manuel %T Explicit Formulae for the Characteristics of the M/H2/1 Retrial Queue %D 1993 %@ 0160-5682 %U https://hdl.handle.net/20.500.14352/57513 %X In this paper we study the M/H2/1 queue with returning customers. We obtain explicit formulae for the steady-state distribution and the expected quality characteristics of the system. In addition, a simple recursion scheme for computing the 'orbit' busy period is proposed. %~