00557naa#a2200181#i#450# EN\\bibl\12238 20240918154916.3 1992-5980 20160621b2016####ek#y0engy0150####ca RUS RU Сlustering method for quality verification of experts’ Unified State Examination checking Journal article rostov on don Don state technical University 2016 8 с. Journal article local Grankov Mikhail Shcherbinin Timofey naukaru.ru