00552naa#a2200169#i#450# EN\\bibl\30453 20241103203654.7 2500-3372 20190904b2019####ek#y0engy0150####ca RU Lead Management as a Modern Internet Technology of Customer Management Journal article Kemerovo Kemerovo State University 2019 7 с. Journal article local Экономика. Экономические науки. 33 Brezhneva Valeria M. jcenter.kemsu.ru