@article{10_37236_1156,
     author = {William Y. C. Chen and Kathy Q. Ji and Herbert S. Wilf},
     title = {BG-ranks and 2-cores},
     journal = {The electronic journal of combinatorics},
     year = {2006},
     volume = {13},
     doi = {10.37236/1156},
     zbl = {1111.05007},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1156/}
}