Tor Gulliksen

Invariants ofS4 and the shape of sets of vectors

Helmer Aslaksen, Shih-Ping Chan, Tor Gulliksen, 2005, Applicable Algebra in Engineering, Communication and Computing.

On the Number of Linearly Separable Subsets of Finite Sets in Rn

Tor Gulliksen, Arne Hole, 1997, Discret. Comput. Geom..