1Mathematical Foundations of Informatics Department Institute of Mathematics and Informatics, Bulgarian Academy of Sciences PO.Box 323, 5000 Veliko Tarnovo, Bulgaria
Doubly resolvable designs with small parameters and their resolutions which have orthogonal resolutions () are constructed and classified up to isomorphism. Exact values or lower bounds on the number of the nonisomorphic sets of mutually orthogonal resolutions are presented. The implemented algorithms and the parameter range of this method are discussed, and the correctness of the computational results is checked in several ways.
