@article{05493598,
title = {Morphing planar graphs in spherical space.},
journal = {Journal of Graph Algorithms and Applications},
volume = {12},
year = {2008},
pages = {113-127},
zbl = {1161.68679},
language = {en},
url = {http://dml.mathdoc.fr/item/05493598}
}
Kobourov, Stephen G.; Landis, Matthew. Morphing planar graphs in spherical space.. Journal of Graph Algorithms and Applications, Tome 12 (2008) pp. 113-127. http://gdmltest.u-ga.fr/item/05493598/