%0 Journal Article %A Mihăilescu, Tiberiu %T Les surfaces $R_0$ %J Czechoslovak Mathematical Journal %D 1958 %P 573-582 %V 8 %N 4 %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1958.100331/ %R 10.21136/CMJ.1958.100331 %G fr %F 10_21136_CMJ_1958_100331