Some publications Research Catalan's equation with a quadratic exponent. C. R. Math. Canada 23, no. Irregular primes and cyclotomic invariants to 12 million. On the parity of the class numbers of real abelian fields.
Some divisibility results for the cyclotomic class number.
Tatra Mt. Math. On the p-divisibility of Fermat quotients. An application of the p-adic class number formula. Letter to the editor. 174, American Math.