Jiexun Wang Liang Zhao Hiroshi Nagamochi Tatsuya Akutsu An Efficient Algorithm for Generating Colored Outerplanar Graphs. 573-583 2007 conf/tamc/2007 TAMC http://dx.doi.org/10.1007/978-3-540-72504-6_51 db/conf/tamc/tamc2007.html#WangZNA07