@article{10_37236_1185,
     author = {Aviezri Fraenkel},
     title = {Even kernels},
     journal = {The electronic journal of combinatorics},
     year = {1994},
     volume = {1},
     doi = {10.37236/1185},
     zbl = {0813.68142},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1185/}
}