%0 Journal Article
%A Qiʼan Guan
%A Xiangyu Zhou
%T Optimal constant problem in the $ {L}^{2}$ extension theorem
%J Comptes Rendus. Mathématique
%D 2012
%P 753-756
%V 350
%N 15-16
%I Elsevier
%R 10.1016/j.crma.2012.08.007
%G en
%F CRMATH_2012__350_15-16_753_0