@article{10_37236_810,
     author = {William Y. C. Chen and Jing Qin and Christian M. Reidys},
     title = {Crossings and nestings in tangled diagrams},
     journal = {The electronic journal of combinatorics},
     year = {2008},
     volume = {15},
     doi = {10.37236/810},
     zbl = {1163.05309},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/810/}
}