00688naa#a2200181#i#4500001001400000005001700014100004100031102000700072200009100079210010500170215001000275608003700285675002900322686006500351700003100416700003600447856002300483EN\\bibl\451520241024142119.4##a20201219b2020####ek#y0engy0150####ca##aRU1#aPoint calculus. Historical background and basic definitionseConference article/thesis1#aNizhny NovgorodcANO "Scientific and Research Center for Information in Physics and Technique"d2020##a6 с.##aConference article/thesis2local##aМатематика. 51##aОбщие вопросы математики. 27.012grnti#1aBalyubagIvan Grigor'evich#1aKonopatskiygEvgeny Viktorovich4#asrcipt.editorum.ru