An existence theorem for parabolic equations on ℝ N with discontinuous nonlinearity. Hofbauer, Josef; Simon, Peter L. — 2001 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
A representation of Sheffer polynomials in terms of a differential equation for their generating functions. (Short Communication). Josef Hofbauer — 1981 Aequationes mathematicae
A representation of Sheffer polynomials in terms of a differential equation for their generating functions. Josef Hofbauer — 1981 Aequationes mathematicae