On Legendre numbers. Haggard, Paul W. — 1985 International Journal of Mathematics and Mathematical Sciences
On Legendre numbers of the second kind. Haggard, Paul W. — 1988 International Journal of Mathematics and Mathematical Sciences
Some applications of Legendre numbers. Haggard, Paul W. — 1988 International Journal of Mathematics and Mathematical Sciences
Some further results on Legendre numbers. Haggard, Paul W. — 1988 International Journal of Mathematics and Mathematical Sciences
Binomial expansions modulo prime powers. Haggard, Paul W.; Kiltinen, John O. — 1980 International Journal of Mathematics and Mathematical Sciences