00710naa#a2200181#i#450# EN\\bibl\50027 20240504062343.6 2686-9896 20220516b2022####ek#y0engy0150####ca RU CHEMICAL MODIFICATIONS OF DIHYDROQERCETIN AIMING THE SYNTHESIS OF PHOTOCHROMIC DERIVATIVE Journal article Angarsk Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University» 2022 1 с. Journal article local Химия. Кристаллография. Минералогия. 54 Stepanov Andrey Vitalievich L'vov Andrey Gennad'evich angtu.editorum.ru