%0 Journal Article %A Sylvester Eriksson-Bique %T Alternative proof of Keith–Zhong self-improvement and connectivity %J Annales Fennici Mathematici %D 2019 %P 407–425-407–425 %V 44 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2019.4424/ %R 10.5186/aasfm.2019.4424 %G en %F AFM_2019_44_1_a24