@article{02010561,
title = {Lower bounds for the number of bends in three-dimensional orthogonal graph drawings.},
journal = {Journal of Graph Algorithms and Applications},
volume = {7},
year = {2003},
pages = {33-77},
zbl = {1027.05094},
language = {en},
url = {http://dml.mathdoc.fr/item/02010561}
}
Wood, David R. Lower bounds for the number of bends in three-dimensional orthogonal graph drawings.. Journal of Graph Algorithms and Applications, Tome 7 (2003) pp. 33-77. http://gdmltest.u-ga.fr/item/02010561/