D. Fakinos, et K. Sirakoulis,, Product-form distributions for an M/G/k group-arrival group-departure loss system, Advances in applied probability , 21(3), 1989, pp. 721-724
In this work we investigate under what circumstances the equilibrium distribution of the numbers of groups of various sizes in a certain M/G/k group-arrival group-departure loss system can be obtained in a closed product form.