@article{GDZPPN002103494, title = {Of-groups of crossed products by groups acting on trees.}, journal = {Inventiones mathematicae}, volume = {83}, year = {1986}, pages = {603-634}, zbl = {0638.46049}, url = {http://dml.mathdoc.fr/item/GDZPPN002103494} }
Pimsner, M.V. Of-groups of crossed products by groups acting on trees.. Inventiones mathematicae, Tome 83 (1986) pp. 603-634. http://gdmltest.u-ga.fr/item/GDZPPN002103494/