@article{MAN_1984__266_163854,
     author = {Erik B\'edos},
     title = {Operator {Algebras} {Associated} with {Free} {Products} of {Groups} with {Amalgamation.}},
     journal = {Mathematische Annalen},
     pages = {279--286},
     year = {1984},
     volume = {266},
     zbl = {0516.22005},
     url = {http://geodesic.mathdoc.fr/item/MAN_1984__266_163854/}
}