00447naa#a2200169#i#450# EN\INFRA-M\bibl\3433 20241219102318.4 2308-4898 20140610b2014####ek#y0engy0150####ca RUS RU Ostensibilities in Geometry Journal article Moscow INFRA-M Academic Publishing LLC. 2014 5 с. Journal article local Girsh A. G. naukaru.ru