Gilbert Labelle, Cédric Lamathe, Pierre Leroux. A classification of plane and planar 2-trees. Theoretical Computer Science, 307(2):337-363, 2003. [doi]
@article{LabelleLL03,
title = {A classification of plane and planar 2-trees},
author = {Gilbert Labelle and Cédric Lamathe and Pierre Leroux},
year = {2003},
doi = {10.1016/S0304-3975(03)00224-X},
url = {http://dx.doi.org/10.1016/S0304-3975(03)00224-X},
tags = {classification},
researchr = {https://researchr.org/publication/LabelleLL03},
cites = {0},
citedby = {0},
journal = {Theoretical Computer Science},
volume = {307},
number = {2},
pages = {337-363},
}