[1]
Bodirsky, M., Fusy, Éric, Kang, M. and Vigerske, S. 2007. Enumeration and Asymptotic Properties of Unlabeled Outerplanar Graphs. The Electronic Journal of Combinatorics. 14, 1 (Sep. 2007), R66. DOI:https://doi.org/10.37236/984.