Generalized Dyson Series, Generalized Feynman Diagrams, the Feynman Integral and Feynman's Operational Calculus

Harmonic Analysis and Nonlinear Differential Equations: A Volume in Honor of Victor L. Shapiro : November 3-5, 1995, University of California, Riverside

Fractal Geometry and Dynamical Systems in Pure and Applied Mathematics: Fractals in pure mathematics