00496naa#a2200169#i#450# EN\INFRA-M\bibl\121744 20260509214704.6 2308-4898 20251225b2025####ek#y0engy0150####ca RU Introduction to Heuristic Geometry: Matrices Journal article Moscow INFRA-M Academic Publishing LLC. 2025 9 с. Journal article local Геометрия. 514 Leparov M. Nikolaevich zh-szf.ru