%0 Journal Article %A Joanna Huk %T Heterogeneous queueing systems $M/M_i/2$ with balking %J Applicationes Mathematicae %D 1976 %P 149-154 %V 15 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/am-15-2-149-154/ %R 10.4064/am-15-2-149-154 %G en %F 10_4064_am_15_2_149_154