@article{JGAA_2008_12_3_a2,
     author = {Martin Harrigan and Patrick Healy},
     title = {Using a {Significant} {Spanning} {Tree} to {Draw} a {Directed} {Graph}},
     journal = {Journal of Graph Algorithms and Applications},
     pages = {293--317},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {2008},
     doi = {10.7155/jgaa.00168},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.7155/jgaa.00168/}
}