00689naa#a2200193#i#450# EN\\bibl\113011 20260118144836.7 2311-1402 20130325b2013####ek#y0engy0150####ca RUS RU Mathematical evaluation of the mutual influence of unemployment rates for different age groups with account of ageing of population Journal article Nizhnevartovsk Nizhnevartovsk State University 2013 5 с. Journal article local Математическая экономия. 330.4 RUS Galimov Iljas Amirovich Urazaeva Lilija Jusupovna vestnik.nvsu.ru