Helmut Prodinger. A simple bijection between a subclass of 2-binary trees and ternary trees. Discrete Mathematics, 309(4):959-961, 2009. [doi]
@article{Prodinger09,
title = {A simple bijection between a subclass of 2-binary trees and ternary trees},
author = {Helmut Prodinger},
year = {2009},
doi = {10.1016/j.disc.2008.01.035},
url = {http://dx.doi.org/10.1016/j.disc.2008.01.035},
researchr = {https://researchr.org/publication/Prodinger09},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {309},
number = {4},
pages = {959-961},
}