@article{RCM_1990__24_3-4_181839,
     author = {Berenice Guerrero},
     title = {Geometria integral de los grupos {ST(n+1)} y {ST} 1 (n+1) en el sepacio proyectivo {Pn}},
     journal = {Revista colombiana de matematicas},
     pages = {129--144},
     publisher = {mathdoc},
     volume = {24},
     number = {3-4},
     year = {1990},
     zbl = {0723.53044},
     url = {http://geodesic.mathdoc.fr/item/RCM_1990__24_3-4_181839/}
}