Infinite products over hyperpyramid lattices. Campbell, Geoffrey B. — 2000 International Journal of Mathematics and Mathematical Sciences
Visible point vector summations from hypercube and hyperpyramid lattices. Campbell, Geoffrey B. — 1998 International Journal of Mathematics and Mathematical Sciences
A new class of infinite products, and Euler's totient. Campbell, Geoffrey B. — 1994 International Journal of Mathematics and Mathematical Sciences
Infinite products over visible lattice points. Campbell, Geoffrey B. — 1994 International Journal of Mathematics and Mathematical Sciences
A closer look at some new identities. Campbell, Geoffrey B. — 1998 International Journal of Mathematics and Mathematical Sciences
A generalized formula of Hardy. Campbell, Geoffrey B. — 1994 International Journal of Mathematics and Mathematical Sciences
Dirichlet summations and products over primes. Campbell, Geoffrey B. — 1993 International Journal of Mathematics and Mathematical Sciences