00499naa#a2200181#i#4500001002100000005001700021011001400038100004100052101000800093102000700101200007500108210005100183215001000234608001900244700002000263700001800283856001600301EN\INFRA-M\bibl\797620210416212914.5##a2308-4898##a20151130b2015####ek#y0engy0150####ca0#aRUS##aRU1#aGraphical Proof of the Main Theorem of Non-Euclidean GeometryeArticle1#aMoscowcINFRA-M Academic Publishing LLC.d2015##a5 с.##aArticle2local#1aSafiulinagYu. #1aShmurnovgV. 4#ariorpub.com