TY - JOUR AU - E. A. Begovatov AU - A. V. Lapin TI - Diffusion approximation in closed queueing systems JO - Issledovaniya po Prikladnoi Matematike i Informatike PY - 1979 SP - 95 EP - 102 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KUIPM_1979_a12/ LA - ru ID - KUIPM_1979_a12 ER -