@article{10_4153_CJM_1976_122_x,
     author = {Longyear, Judith Q.},
     title = {Criteria for a {Hadamard} {Matrix} to be {Skew-Equivalent}},
     journal = {Canadian journal of mathematics},
     pages = {1216--1223},
     year = {1976},
     volume = {28},
     number = {6},
     doi = {10.4153/CJM-1976-122-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1976-122-x/}
}