@article{RMH_1982_1982_1_a1,
     author = {Romo Santos, Concepci\'on},
     title = {Ultraproductos de variedades no singulares.},
     journal = {Revista matem\'atica hispano-americana},
     pages = {74-81},
     publisher = {mathdoc},
     volume = {42},
     number = {1-2-3},
     year = {1982},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/RMH_1982_1982_1_a1/}
}