@article{JGAA_2015_19_2_a3,
     author = {Michael Bannister and William Devanny and David Eppstein and Michael Goodrich},
     title = {The {Galois} {Complexity} of {Graph} {Drawing:} {Why} {Numerical} {Solutions} are {Ubiquitous} for {Force-Directed,} {Spectral,} and {Circle} {Packing} {Drawings}},
     journal = {Journal of Graph Algorithms and Applications},
     pages = {619--656},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2015},
     doi = {10.7155/jgaa.00349},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.7155/jgaa.00349/}
}