1. A Fundamental Theorem of Homomorphisms for Semirings, Proc. Amer. Math. Soc. (2) 21 (1969), 412-418.

2. Cohen's Theorem for a Class of Noetherian Semirings, Publ. Math. (Debrecen) 17 (1970), 169-171.

3. Operator Semigroups with Applications to Semirings, W. R. Windham, Publ. Math. (Debrecen) 20 (1973), 161-175.

4. A Basis Theorem for the Semiring Part of a Boolean Algebra, E. J. Brackin, Publ. Math. (Debrecen) 20 (l973), 153-155.

5. An Extension of the Hilbert Basis Theorem to Semirings, Publ. Math. (Debrecen) 22 (1975), 31-34.

6. Ideal Theory in the Semiring Z+, L. Dale, Publ. Math. (Debrecen) 22 (1975), 219-224.

7. A Characterization of Steinitz Group Rings, J. Neggers, Proc. Amer. Math. Soc. 49(1975), 39-42.

8. Ideal Theory in Polynomial Semirings, L. Dale, Publ. Math. (Debrecen) Vol. 23, No. 3-4, pp. 185-190, 1976.

9. An Extension of the Hilbert Basis Theorem, L. Dale, Publ. Math. (Debrecen), Vol. 27 (1980), 31-34.

10. Central Perfect Rings, J. Neggers, Journal of the Korean Math Society (1980).

11. A Characterization of Units in Z[A4], C. Hobby, Journal of Algebra, Vol. 66 (1980), 534-543.

12. Direct Products of Operator Semigroups, Allen, Dale, and Edwards, Journal of Indian Math. Society, Vol. 40, 1984, pp. 335-355.

13. Units in integral group rings of some metacyclic groups, (with C. Hobby), Canadian Bulletin of Math., Vol. 30 (2), 1987.

14. A characterization of units in ZS3, (with C. Hobby), Proc. A.M.S., Vol. 99(1987), 9-14.

15. A characterization of units in ZS4, (with C. Hobby), Communications in Algebra, 16(7), 1479-1505 (1988).

16. Elements of finite order in V(ZA4), (with C. Hobby), Pacific Journal of Mathematics, 138(1), 1989.