Paschke, William L.. "A numerical invariant for finitely generated groups via actions on graphs.." Mathematica Scandinavica 72.1 (1993): 148-160. <http://eudml.org/doc/167243>.
@article{Paschke1993, author = {Paschke, William L.}, journal = {Mathematica Scandinavica}, keywords = {finitely generated groups; square-summable functions; Betti number; von Neumann dimension; von Neumann algebras; directed graph; harmonic functions; regular representation; amalgamated products of finite groups; subgroup of finite index}, number = {1}, pages = {148-160}, title = {A numerical invariant for finitely generated groups via actions on graphs.}, url = {http://eudml.org/doc/167243}, volume = {72}, year = {1993}, }
TY - JOUR AU - Paschke, William L. TI - A numerical invariant for finitely generated groups via actions on graphs. JO - Mathematica Scandinavica PY - 1993 VL - 72 IS - 1 SP - 148 EP - 160 KW - finitely generated groups; square-summable functions; Betti number; von Neumann dimension; von Neumann algebras; directed graph; harmonic functions; regular representation; amalgamated products of finite groups; subgroup of finite index UR - http://eudml.org/doc/167243 ER -