1. Problem 89;Alspach;Discrete Math.,1988
2. Orthogonal claimorizations of graphs;Alspach,1992
3. Orthogonal matchings;Anstee;Discrete Math.,1998
4. Graph Theory with Applications;Bondy,1976
5. Premature sets of one-claimors;Caccetta;Australas. J. Combin.,1992