@article{GAMA_1980_1980_1_a0,
     author = {Hern\'andez Guarch, F. and  Arrib{\'\i} L\'opez, A.},
     title = {La paradoja de {Bertrand.} {Revisi\'on} de un caso hist\'orico.},
     journal = {Gaceta matem\'atica},
     pages = {3-9},
     publisher = {mathdoc},
     volume = {32},
     number = {1-2},
     year = {1980},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/GAMA_1980_1980_1_a0/}
}