J. Li, D. Ma, W. Wang:
"SL(n) contravariant vector valuations";
Discrete & Computational Geometry, 67 (2021), 1211 - 1228.
http://dx.doi.org/10.1007/s00454-021-00335-yElectronic version of the publication:
https://link.springer.com/article/10.1007/s00454-021-00335-y