Design of nonrecursive digital filters to meet maximum and minimum frequency response constraints. - Benjamin J. Leon; Michael T. McCallig (ICASSP, 1976)

Recursive digital filters with low coefficient sensitivity. - Michael T. McCallig; Richard R. Kurth; R. C. Steel (ICASSP, 1979)

2-D FIR Filter design via semipolynomial approximation. - Richard R. Kurth; Michael T. McCallig (ICASSP, 1980)