@article{RMH_1980_1980_1_a17,
     author = {Romo Santos, Concepci\'on},
     title = {Los exponentes ideal{\'\i}sticos de contacto y su c\'alculo.},
     journal = {Revista matem\'atica hispano-americana},
     pages = {216-224},
     publisher = {mathdoc},
     volume = {40},
     number = {5-6},
     year = {1980},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/RMH_1980_1980_1_a17/}
}