@article{ASENS_1977_4_10_4_473_0,
     author = {van der Kallen, Wilberd},
     title = {The $K_2$ of rings with many units},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {473--515},
     publisher = {Elsevier},
     volume = {Ser. 4, 10},
     number = {4},
     year = {1977},
     doi = {10.24033/asens.1334},
     mrnumber = {58 #22018},
     zbl = {0393.18012},
     language = {en},
     url = {http://archive.numdam.org/articles/10.24033/asens.1334/}
}