%0 Journal Article
%A Lanteri, Antonio
%T Vertically of (-1)-Lines in Scrolls Over Smooth Surfaces
%J Canadian mathematical bulletin
%D 1991
%P 236-239
%V 34
%N 2
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1991-038-3/
%R 10.4153/CMB-1991-038-3
%F 10_4153_CMB_1991_038_3