@article{JGAA_2007_11_2_a5,
     author = {Chun-Cheng Lin and Hsu-Chun Yen},
     title = {On {Balloon} {Drawings} of {Rooted} {Trees}},
     journal = {Journal of Graph Algorithms and Applications},
     pages = {431--452},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {2007},
     doi = {10.7155/jgaa.00153},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.7155/jgaa.00153/}
}