1. Primitive elements with zero traces, Dedicated to Professor Ko Chao on the occasion of his 90th birthday;Chou;Finite Fields Appl,2001
2. Primitive elements and polynomials with arbitrary trace;Cohen;Discrete Math,1990
3. Primitive Elements and Polynomials: Existence results;Cohen,1993
4. S.D. Cohen, D. Mills, Primitive polynomials with the first and second coefficients prescribed, preprint.
5. Sh.Q. Fan, W.B. Han, Character sums over Galois rings and primitive polynomials over finite fields, Finite Fields Appl. S1071-5797(03)00041-8, in press.