On the Completion of Partial Latin Squares. - Albert L. Wells Jr. (J. Comb. Theory A, 1977)

On the Separation Power and the Completion of Partial Latin Squares. - Albert L. Wells Jr. (J. Comb. Theory A, 1979)

Even signings, signed switching classes, and (-1, 1)-matrices. - Albert L. Wells Jr. (J. Comb. Theory B, 1984)

Signatures and signed switching classes. - Peter J. Cameron; Albert L. Wells Jr. (J. Comb. Theory B, 1986)

Switching classes of directed graphs. - Ying Cheng 006; Albert L. Wells Jr. (J. Comb. Theory B, 1986)