On Rota's Problem Concerning Partitions. (Short Communication). R.C. Mullin — 1968 Aequationes mathematicae
On the Existence of Room Squares of Order 4n R.C. MULLIN; W.D. WALLIS — 1971 Aequationes mathematicae
A Recursive Construction for Room Designs. (Short Communication). R.C. Mullin; J.D. Harton; R. Stanton — 1970 Aequationes mathematicae
On the spectrum of resolvable orthogonal arrays invariant under the Klein group K4. C.C. Lindner; R.C. Mullin; D. Stinson — 1983 Aequationes mathematicae