Che Soong Kim Valentina I. Klimenok Gennady V. Tsarenkov Lothar Breuer Alexander N. Dudin The BMAP/G/1 -> ./PH/1/M tandem queue with feedback and losses. 802-818 2007 64 Perform. Eval. 7-8 http://dx.doi.org/10.1016/j.peva.2007.01.002 db/journals/pe/pe64.html#KimKTBD07