00496naa#a2200169#i#450# EN\INFRA-M\bibl\3854 20250129050930.3 2306-1731 20140910b2014####ek#y0engy0150####ca RUS RU Skills Development and Retraining by Means of Distance Learning Technologies Journal article Moscow INFRA-M Academic Publishing LLC. 2014 2 с. Journal article local Labutin V. naukaru.ru