Questions of the queuing theory are studied at the global level by specialists from the Institute of Applied Mathematical Research KarRC RAS. This is a current trend with applications in computing, Internet and telecommunications, logistics, transport and other areas. Chief Researcher at IAMR KarRC RAS Evsey Morozov told about a study on the robustness of retrial queuing systems at KarRC RAS Learned Council meeting on December 20th.