@article{ELA_2007__16__a11,
     author = {Tlusty, Tsvi},
     title = {A relation between the multiplicity of the second eigenvalue of a graph {Laplacian,} {Courant's} nodal line theorem and the substantial dimension of tight polyhedral surfaces},
     journal = {The electronic journal of linear algebra},
     pages = {315--324},
     publisher = {mathdoc},
     volume = {16},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2007__16__a11/}
}