On the Branching of Solutions of Quadratic Differential Equations. E.L. Allgower; P.M. Prenter — 1974 Aequationes mathematicae
Numerical Iterative Filters Applied to First Kind Fredholm Integral Equations. P.M. Prenter; Graves. J. — 1978 Numerische Mathematik
An Analysis of the Numerical Solution of Fredholm Integral Equations of the First Kind. P.M. Prenter; J.W. Lee — 1978 Numerische Mathematik