00519naa#a2200157#i#450# EN\\bibl\93089 20250123074333.4 2221-3260 20241130b2024####ek#y0engy0150####ca RU Demand, law of demand, Giffen and Veblen effects. Part 2. Non-functional demand and demand puzzles Journal article Yaroslavl Yaroslavl State Technical University 2024 21 с. Journal article local Tsurikov Vladimir Ivanovich chemintech.ru