J. S. Ratti

The graphs of semirings. II

J. S. Ratti, Y.-F. Lin, 1971 .

On the zeros of a polynomial and its derivative

J. S. Ratti, A. W. Goodman, Q. I. Rahman, 1969 .

Finite Mathematics with Applications.

J. S. Ratti, A. W. Goodman, Thomas W. Casstevens, 1973 .