00550naa#a2200181#i#4500001002200000005001700022011001400039100004100053101000800094102000700102200010000109210005100209215001100260608002700271675003400298700002200332856001400354EN\INFRA-M\bibl\2804620241203144816.2##a2308-4898##a20190408b2019####ek#y0engy0150####ca0#aRUS##aRU1#aDiscrete Geometric Models for Estimating the Degree of Shading in Solar EnergyeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2019##a17 с.##aJournal article2local##aМатематика. 51zRUS#1aMarkingLeonid V.4#azh-szf.ru