PT - JOURNAL ARTICLE AU - Dorda, Michal TI - UNRELIABLE M/M/1/2 QUEUEING SYSTEM WITH MASS CUSTOMERS DEPARTURE AND ITS SOLVING DP - 2009 Sep 30 TA - Doprava a spoje PG - 5--15 VI - 5 IP - 2 IS - 13367676 AB - The queueing theory is widely used in many branches, for example in informatics, economics and of course in transport. Common models of queueing systems usually assume that a server breakdown can not occur. In this paper the model of the unreliable M/M/1/2 queueing system with mass customer departure after server breakdown occurrence is presented. This paper shows solving of studied model by two different approaches - method according to A. ChinĨin and by graph method.