@article{MMNP_2010_5_4_a9,
     author = {M. Keller and D. Lenz},
     title = {Unbounded {Laplacians} on {Graphs:} {Basic} {Spectral} {Properties} and the {Heat} {Equation}},
     journal = {Mathematical modelling of natural phenomena},
     pages = {198--224},
     publisher = {mathdoc},
     volume = {5},
     number = {4},
     year = {2010},
     doi = {10.1051/mmnp/20105409},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1051/mmnp/20105409/}
}