@article{10_4153_S0008414X19000658,
     author = {Ma, Dan and Wang, Wei},
     title = {LYZ {Matrices} and {SL(}$n$) {Contravariant} {Valuations} on {Polytopes}},
     journal = {Canadian journal of mathematics},
     pages = {383--398},
     year = {2021},
     volume = {73},
     number = {2},
     doi = {10.4153/S0008414X19000658},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008414X19000658/}
}