@article{RACSAM_2002_2002_1_a31,
     author = {Arratia, Oscar and Mart{\'\i}n M{\'\i}nguez, M.{\textordfeminine} Angeles and Olmo, Mar{\'\i}a Angeles del},
     title = {Deformaci\'on en el espacio de las fases.},
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales. Matem\'aticas},
     pages = {63-81},
     publisher = {mathdoc},
     volume = {96},
     number = {1},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RACSAM_2002_2002_1_a31/}
}