@article{CM_1991__77_3_293_0,
     author = {Plymen, R. J. and Leung, C. W.},
     title = {Arithmetic aspect of operator algebras},
     journal = {Compositio Mathematica},
     pages = {293--311},
     publisher = {Kluwer Academic Publishers},
     volume = {77},
     number = {3},
     year = {1991},
     mrnumber = {1092771},
     zbl = {0843.22011},
     language = {en},
     url = {http://www.numdam.org/item/CM_1991__77_3_293_0/}
}