@article{CLTM_2007_2007_1_a11,
     author = {Ricard, \'Eric and Rosendal, Christian},
     title = {Sobre la estructura algebraica del grupo unitario.},
     journal = {Collectanea mathematica},
     pages = {181-192},
     publisher = {mathdoc},
     volume = {58},
     number = {2},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_2007_2007_1_a11/}
}