%0 Journal Article %A Lakehal Belarbi %T Surfaces with constant extrinsically Gaussian curvature in the Heisenberg group %J Annales mathematicae et informaticae %D 2019 %P 5-17 %V 50 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.33039/ami.2019.01.001/ %R 10.33039/ami.2019.01.001 %G en %F AMI_2019_50_a0