Vanishing criteria and the Picard group for projective varieties of low codimension Robert Speiser — 1980 Compositio Mathematica
Cohomological Dimension of Non-Complete Hypersurfaces. Robert Speiser — 1973 Inventiones mathematicae
Extending meromorphic functions on ...m x ...n. Robert Speiser — 1979 Journal für die reine und angewandte Mathematik
On the Hurwitz scheme and its monodromy David Eisenbud; Noam Elkies; Joe Harris; Robert Speiser — 1991 Compositio Mathematica