1. and 1964 Handbook of mathematical functions. Dover publications, Inc., New York
2. An Efficient, One-Level, Primitive-Equation Spectral Model
3. and 1985 Analyse mathématique et calcul numérique pour les sciences et les techniques. Tome 3. Masson, Paris
4. 1991 ‘Formulation of the ECMWF model’. Pp. 261–280 in Vol. II, Proc. 1991 ECMWF seminar on numerical methods for atmospheric models. Available from ECMWF
5. Use of Reduced Gaussian Grids in Spectral Models