00691naa#a2200205#i#450# EN\\bibl\34000 20241121191830.4 2500-3372 20191216b2019####ek#y0engy0150####ca RU Application of Digital Marketing Innovation Technology to Improve Service Promotion Efficiency Journal article Kemerovo Kemerovo State University 2019 5 с. Journal article local Экономика. Экономические науки. 33 Podzorova Galina A Kirillova Valeriya E. Pleshkova Nataliya A. Gryaznova N. L. vestnik-pses.kemsu.ru