Roberta R. Zhou, Kun Yan, Yihui He, Xinxin Xu. A Note on Combinatorial Proofs for Extended Touchard's and Extended Koshy's Identities. Graphs and Combinatorics, 36(6):1705-1711, 2020. [doi]
@article{ZhouYHX20-1, title = {A Note on Combinatorial Proofs for Extended Touchard's and Extended Koshy's Identities}, author = {Roberta R. Zhou and Kun Yan and Yihui He and Xinxin Xu}, year = {2020}, doi = {10.1007/s00373-020-02195-4}, url = {https://doi.org/10.1007/s00373-020-02195-4}, researchr = {https://researchr.org/publication/ZhouYHX20-1}, cites = {0}, citedby = {0}, journal = {Graphs and Combinatorics}, volume = {36}, number = {6}, pages = {1705-1711}, }