00538naa#a2200157#i#450# EN\\bibl\37836 20240428173142.7 2500-3372 20200529b2020####ek#y0engy0150####ca RU Development of Digital Competencies and Digital Marketing as a Means of Ensuring the Competitiveness of Economic Entities Journal article Kemerovo Kemerovo State University 2020 9 с. Journal article local Grudistova Elena Gennad'evna vestnik-pses.kemsu.ru