00539naa#a2200181#i#450# EN\INFRA-M\bibl\11035 20250226071317.3 1998-0744 20160217b2016####ek#y0engy0150####ca RUS RU Current Trends in Professional Improvement of Art Teachers in Terms of Further Training Journal article Moscow INFRA-M Academic Publishing LLC. 2016 5 с. Journal article local Duganova L. Rudneva Olga zh-szf.ru