@article{GAMA_1969_1969_1_a6,
     author = {Mir, Jes\'us},
     title = {Sobre la proyecci\'on gnom\'onica rutas ortodr\'omicas.},
     journal = {Gaceta matem\'atica},
     pages = {73-77},
     publisher = {mathdoc},
     volume = {21},
     number = {3-4},
     year = {1969},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/GAMA_1969_1969_1_a6/}
}