00541naa#a2200169#i#450# EN\INFRA-M\bibl\39076 20260411101410.6 2308-4898 20200817b2020####ek#y0engy0150####ca RU Computer Verification of Descriptive Geometry Task Solutions for Engineering and Graphic Education Journal article Moscow INFRA-M Academic Publishing LLC. 2020 15 с. Journal article local Математика. 51 Boykov A. A. zh-szf.ru