@article{10_4153_CMB_1977_011_3,
     author = {Cummings, Larry J. and Wallis, Jennifer Seberry},
     title = {An {Algorithm} for the {Permanent} of {Circulant} {Matrices}},
     journal = {Canadian mathematical bulletin},
     pages = {67--70},
     year = {1977},
     volume = {20},
     number = {1},
     doi = {10.4153/CMB-1977-011-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1977-011-3/}
}