Louis W. Shapiro. A Short Proof of an Identity of Touchard s Concerning Catalan Numbers. Journal of Combinatorial Theory, Series A, 20(3):375-376, 1976.
@article{Shapiro76,
title = {A Short Proof of an Identity of Touchard s Concerning Catalan Numbers},
author = {Louis W. Shapiro},
year = {1976},
researchr = {https://researchr.org/publication/Shapiro76},
cites = {0},
citedby = {0},
journal = {Journal of Combinatorial Theory, Series A},
volume = {20},
number = {3},
pages = {375-376},
}