@article{10_4153_CMB_1974_093_2,
     author = {Hartfiel, D. J.},
     title = {A {Lower} {Bound} for the {Permanent} on a {Special} {Class} of {Matrices}},
     journal = {Canadian mathematical bulletin},
     pages = {529--530},
     year = {1974},
     volume = {17},
     number = {4},
     doi = {10.4153/CMB-1974-093-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-093-2/}
}