00486naa#a2200169#i#450# EN\\bibl\6590 20240519012645.7 1993-7768 20150828b2015####ek#y0engy0150####ca RUS RU Origins and expansion of mortgage crisis Journal article CHERKIZOVO Russian State University of Tourism and Service 2015 6 с. Journal article local Khlopunova Mariya rguts.editorum.ru