@article{10_1017_S0017089500000094,
     author = {Spence, E.},
     title = {A new class of {Hadamard} matrices},
     journal = {Glasgow mathematical journal},
     pages = {59--62},
     year = {1967},
     volume = {8},
     number = {1},
     doi = {10.1017/S0017089500000094},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500000094/}
}