@article{ELA_2003__10__a12,
     author = {Neumann, Michael and Ormes, Nic},
     title = {Bounds for graph expansions via elasticity},
     journal = {The electronic journal of linear algebra},
     pages = {163--178},
     publisher = {mathdoc},
     volume = {10},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2003__10__a12/}
}