@article{MAN_1992__293_4_164948,
     author = {Tudor Zamfirescu},
     title = {Long geodesics on convex surfaces.},
     journal = {Mathematische Annalen},
     pages = {109--114},
     publisher = {mathdoc},
     volume = {293},
     number = {4},
     year = {1992},
     zbl = {0735.53032},
     url = {http://geodesic.mathdoc.fr/item/MAN_1992__293_4_164948/}
}