@article{COMIM_2021__29_1_a1, author = {Contreras, Daniel Uzc\'ategui and Goyeneche, Dardo and Turek, Ond\v{r}ej and V\'aclav{\'\i}kov\'a, Zuzana}, title = {Circulant matrices with orthogonal rows and off-diagonal entries of absolute value $1$}, journal = {Communications in Mathematics}, pages = {15--34}, publisher = {mathdoc}, volume = {29}, number = {1}, year = {2021}, mrnumber = {4251308}, zbl = {07413355}, language = {en}, url = {http://geodesic.mathdoc.fr/item/COMIM_2021__29_1_a1/} }