Paper
On a problem of Zaks
Alan J. Hoffman
J. Comb. Theory Ser. A
We prove there exist a finite set of (real) matrices of order n with positive determinant that, collectively, "see" all such matrices. © 1985.
Alan J. Hoffman
J. Comb. Theory Ser. A
Ronen Feldman, Martin Charles Golumbic
Ann. Math. Artif. Intell.
Frank R. Libsch, Takatoshi Tsujimura
Active Matrix Liquid Crystal Displays Technology and Applications 1997
John R. Kender, Rick Kjeldsen
IEEE Transactions on Pattern Analysis and Machine Intelligence