%0 Journal Article %T GCH+□_k IMPLIES THE EXISTENCE OF TWO NON-ISOMORPHIC COMPLETE NORMAL ST_(k~+) %J 科学通报(英文版) %D 1991 %I %K Boolean-valued %K model %K ◇-principle %K □-principle %K iterated %K forcing. %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=A8DC8668C1984C8167CC838813193131&yid=116CB34717B0B183&vid=933658645952ED9F&iid=F3090AE9B60B7ED1&sid=4A2C67480A6B9F95&eid=4A2C67480A6B9F95&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=0