TY - CHAP A1 - Brandt, Andreas A1 - Brandt, Manfred A1 - Spahl, G. A1 - Weber, D. T1 - Modelling and optimization of call distribution systems T2 - Proc. 15th Int. Teletraffic Cong. (ITC 15) Y1 - 1997 SP - 133 EP - 144 CY - Washington D.C., USA ER -