00642naa#a2200181#i#4500001002200000005001700022011001400039100004100053101000800094102000700102200011800109210005100227215001000278608002700288675011300315700001700428856001500445EN\INFRA-M\bibl\1907020240420140256.6##a1998-1740##a20171212b2017####ek#y0engy0150####ca0#aRUS##aRU1#aThe Method of the Didactic Complexity Estimation of Some Issues of the School Mathematics CourseeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2017##a5 с.##aJournal article2local##aОбразование. Воспитание. Обучение. Организация досуга. 37zRUS#1aMayergR. V.4#anaukaru.ru