@article{SLC_1988_19_a8,
     author = {Norma Zagaglia Salvi},
     title = {On the {Permanent} of {Certain} {Submatrices} of {Circulant} {(0,1)-Matrices}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {19},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/SLC_1988_19_a8/}
}