Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{AM2_1985__29_137098, author = {Elizabeth J. Billington}, title = {Balanced ternary designs with block size three, any ... and any {R.}}, journal = {Aequationes mathematicae}, pages = {244--289}, publisher = {mathdoc}, volume = {29}, year = {1985}, zbl = {0629.05014}, url = {http://geodesic.mathdoc.fr/item/AM2_1985__29_137098/} }
Elizabeth J. Billington. Balanced ternary designs with block size three, any ... and any R.. Aequationes mathematicae, Tome 29 (1985), pp. 244-289. http://geodesic.mathdoc.fr/item/AM2_1985__29_137098/