%0 Journal Article %A Abrahamsen, Trond A. %A Hájek, Petr %A Nygaard, Olav %A Troyanski, Stanimir L. %T Strongly Extreme Points and Approximation Properties %J Canadian mathematical bulletin %D 2018 %P 449-457 %V 61 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2017-067-3/ %R 10.4153/CMB-2017-067-3 %F 10_4153_CMB_2017_067_3