%0 Journal Article
%T BEST APPROXIMATION OF FUNCTION CLASSES DEFINED BY A LINEAR DIFFEREN- TIAL OPERATOR<br>
%J 科学通报(英文版)
%D 1983
%I 
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=69532A93B43669780FFD246C56E99980&yid=A7F20A391020FDEE&vid=D3E34374A0D77D7F&iid=5D311CA918CA9A03&sid=D932AD0F8FDA3032&eid=D932AD0F8FDA3032&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=0