Patrizio Angelini Markus Geyer Michael Kaufmann Daniel Neuwirth On a Tree and a Path with no Geometric Simultaneous Embedding. 37-83 2012 16 J. Graph Algorithms Appl. 1 http://jgaa.info/accepted/2012/AngeliniGeyerKaufmannNeuwirth2012.16.1.pdf db/journals/jgaa/jgaa16.html#AngeliniGKN12