@article{MOMA_1977__84_177836,
     author = {G.R. Burton},
     title = {Convex {Surfaces} {Whose} {Geodesics} {Are} {Planar.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {177--196},
     publisher = {mathdoc},
     volume = {84},
     year = {1977},
     zbl = {0385.53055},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1977__84_177836/}
}