00471naa#a2200169#i#450# EN\INFRA-M\bibl\12298 20241117050912.7 2500-0489 20160325b2016####ek#y0engy0150####ca RUS RU N-dimensional space: the function and the extremes Journal article Moscow INFRA-M Academic Publishing LLC. 2016 0 с. Journal article local Ugrozov V. naukaru.ru