On the three-dimensional orthogonal drawing of outerplanar graphs
Satoshi Tayu, Takuya Oshima, Shuichi Ueno · 2009
It has been known that every series-parallel 6-graph has a 2-bend 3-D orthogonal drawing, while it has been open whether every series-parallel 6-graph has a 1-bend 3-D orthogonal drawing. We show in this paper that every outerplanar 5-graph has a 1-bend 3-D orthogonal drawing.