@article{10_4153_CMB_1990_011_4,
     author = {Garay, Oscar J.},
     title = {Pseudoumbilical {2-Type} {Surfaces} in {Spheres}},
     journal = {Canadian mathematical bulletin},
     pages = {65--68},
     year = {1990},
     volume = {33},
     number = {1},
     doi = {10.4153/CMB-1990-011-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1990-011-4/}
}