Martin Klazar. On Identities Concerning the Numbers of Crossings and Nestings of Two Edges in Matchings. SIAM J. Discrete Math., 20(4):960-976, 2006. [doi]
@article{Klazar06,
title = {On Identities Concerning the Numbers of Crossings and Nestings of Two Edges in Matchings},
author = {Martin Klazar},
year = {2006},
doi = {10.1137/050625357},
url = {http://dx.doi.org/10.1137/050625357},
researchr = {https://researchr.org/publication/Klazar06},
cites = {0},
citedby = {0},
journal = {SIAM J. Discrete Math.},
volume = {20},
number = {4},
pages = {960-976},
}