Ira M. Gessel, Wayne Goddard, Walter Shur, Herbert S. Wilf, Lily Yen. Counting Pairs of Lattice Paths by Intersections. Journal of Combinatorial Theory, Series A, 74(2):173-187, 1996. [doi]
@article{GesselGSWY96,
title = {Counting Pairs of Lattice Paths by Intersections},
author = {Ira M. Gessel and Wayne Goddard and Walter Shur and Herbert S. Wilf and Lily Yen},
year = {1996},
doi = {10.1006/jcta.1996.0047},
url = {http://dx.doi.org/10.1006/jcta.1996.0047},
researchr = {https://researchr.org/publication/GesselGSWY96},
cites = {0},
citedby = {0},
journal = {Journal of Combinatorial Theory, Series A},
volume = {74},
number = {2},
pages = {173-187},
}