5Taufembaek C, Silva S D. Queueing theory applied to the opti- mal management of bank excess reserves [ J ]. Physiea A : Sta- tistical mechanics and its applications, 2012,391 ( 4 ) : 1381 - 1387.
8Ross S M. A first course in probability [ M ]. [ s. 1. ] : Prentice Hall,2010.
9Papoulis A, PiUai U. Probability, random variables and sto- chastic processes[ M]. [ s. 1. ] : McGraw-Hill Education ( A- sia) Co. ,2002.
10Vahdani B,Tavakkoli-Moghaddam R,Jolai F. Reliable design of a logistics network under uncertainty:A fuzzy possibilistie- queuing model [ J ]. Applied mathematical modeling, 2013,37 (5) :3254-3268.