%0 Journal Article
%T ON NUMERICAL RANGES AND ESSENTIAL NUMERICAL RANGES OF ELEMENTARY OPERATORS<br>
%J 科学通报(英文版)
%D 1992
%I 
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=A6406F14F6F0DD8D027556958F56BE3B&yid=F53A2717BDB04D52&vid=42425781F0B1C26E&iid=E158A972A605785F&sid=4B168891B5E5FB30&eid=4B168891B5E5FB30&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=0