@article{10_4171_ggd_336,
     author = {Izhar Oppenheim},
     title = {Property {(T)} for groups acting on simplicial complexes through taking an {\textquotedblleft}average{\textquotedblright} of {Laplacian} eigenvalues},
     journal = {Groups, geometry, and dynamics},
     pages = {1131--1152},
     year = {2015},
     volume = {9},
     number = {4},
     doi = {10.4171/ggd/336},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/336/}
}