%0 Journal Article %A Yingchun Cai %T A remark on Chen's theorem %J Acta Arithmetica %D 2002 %P 339-352 %V 102 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa102-4-5/ %R 10.4064/aa102-4-5 %G de %F 10_4064_aa102_4_5