@article{MAN_1987__279_3_164335,
     author = {M.S. Raghunathan},
     title = {On the {Group} of {Norm} 1 {Elements} in a {Division} {Algebra.}},
     journal = {Mathematische Annalen},
     pages = {457--484},
     publisher = {mathdoc},
     volume = {279},
     number = {3},
     year = {1987},
     zbl = {0639.20026},
     url = {http://geodesic.mathdoc.fr/item/MAN_1987__279_3_164335/}
}