The Non-existence of (3, 1, 2)-Conjugate Orthogonal Idempotent Latin Square of Order 10.

Olivier Dubois Gilles Dequen The Non-existence of (3, 1, 2)-Conjugate Orthogonal Idempotent Latin Square of Order 10. 108-120 2001 conf/cp/2001 CP http://link.springer.de/link/service/series/0558/bibs/2239/22390108.htm db/conf/cp/cp2001.html#DuboisD01