[1] C. Greither: Improving Ramachandra's and Levesque's unit index. to appear in the Proceedings of the Fifth Conference of the Canadian Number Theory Association (1996), Ottawa.
[3] C. Levesque:
On improving Ramachandra's unit index. Number Theory, 1st Conference of the Canadian Number Theory Association, 1990, pp. 325-338.
MR 1106671 |
Zbl 0696.12006
[4] K. Ramachandra:
On the units of cyclotomic fields. Acta Arith XII, 1996, pp. 165-173.
MR 0204407