ANALYTICAL PERFORMANCE ESTIMATION OF NETWORK-ASSISTED D2D COMMUNICATIONS IN URBAN SCENARIOS WITH RECTANGULAR CELLS СтатьяSamuylov A., Ometov A., Begishev V., Kovalchukov R., Moltchanov D., Gaidamaka Y., Samouylov K., Andreev S., Koucheryavy Y.Transactions on Emerging Telecommunications Technologies. Том 28. 2017.