@article{CLTM_1988_1988_1_a5,
     author = {Arcidiacono, Giuseppe},
     title = {El universo de {Sitter,} el grupo de {Fantappie} y la cosmolog{\'\i}a del {Big-Bang.}},
     journal = {Collectanea mathematica},
     pages = {55-65},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1988_1988_1_a5/}
}