Combinatorics on Ideals and Axiom A. - James D. Sharp (J. Symb. Log., 1994)

Uniformization Problems and the Cofinality of the Infinite Symmetric Group. - James D. Sharp; Simon Thomas 001 (Notre Dame J. Formal Log., 1994)

Unbounded families and the cofinality of the infinite symmetric group. - James D. Sharp; Simon Thomas 001 (Arch. Math. Log., 1995)

Some Questions Concerning the Cofinality of Sym(kappa). - James D. Sharp; Simon Thomas 001 (J. Symb. Log., 1995)