Duba zuwa sashi na ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda sashi: Passage: a lokaci guda ya ba da shawarar irin wannan fadada, don haka a yanzu an san samfurin a matsayin jerin Polyakov-Kleinert. Tambaya: Menene sunan samfurin a ƙarshe?
Ƙungiyar Polyakov-Kleinert