On the Nonexistence of Close-Packed Double Hamming-Error-Correcting Codes on q=7 Symbols. - Ronald Alter (J. Comput. Syst. Sci., 1968)

On the Non-Existence of Perfect Double Hamming-Error-Correcting Codes on q = 8 and q = 9 Symbols - Ronald Alter (Inf. Control., 1968)

An experimental Computer Science problem seminar. - Ronald Alter; Thaddeus B. Curtz (SIGCSE, 1972)

Prime and Prime Power Divisibility of Catalan Numbers. - Ronald Alter; K. K. Kubota (J. Comb. Theory A, 1973)

Uniquely intersectable graphs. - Ronald Alter; Chung C. Wang (Discret. Math., 1977)

Enumerating syntactical graphs and lattices of derivations. - Ronald Alter; Johnson M. Hart (Int. J. Parallel Program., 1979)