@article{JOLT_2020_30_2_a10,
     author = {Yongdo Lim},
     title = {Hadamard {Semigroups} of {Off-Diagonal} {Constant} {Matrices}},
     journal = {Journal of Lie Theory},
     pages = {473--488},
     year = {2020},
     volume = {30},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2020_30_2_a10/}
}