@article{10_37236_1967,
     author = {D. D. Olesky and Bryan Shader and P. van den Driessche},
     title = {Permanents of {Hessenberg} (0,1)-matrices},
     journal = {The electronic journal of combinatorics},
     year = {2005},
     volume = {12},
     doi = {10.37236/1967},
     zbl = {1086.15007},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1967/}
}