1. S. N. M. Ruijsenaars, Systems of Calogero-Moser type, in: “Proceedings of the 1994 Banff summer school Particles and fields”, G. Semenoff, L. Vinet, eds., CRM Series in Mathematical Physics, Springer, New York, 1999, pp. 251–352.
2. S. N. M. Ruijsenaars, Special functions associated with Calogero-Moser type quantum systems, in: “Proceedings of the 1999 Montréal Séminaire de Mathématiques Supérieures, J. Harnad, G. Sabidussi, and P. Winternitz, eds., CRM Proceedings and Lecture Notes, Vol. 26, Amer. Math. Soc, Providence, 2000, pp. 189–226.
3. S. N. M. Ruijsenaars, On relativistic Lamé functions, in: “Proceedings of the 1997 Montréal Workshop on Calogero-Moser-Sutherland systems, J. F. van Diejen and L. Vinet, eds., CRM Series in Mathematical Physics, Springer, New York, 2000, pp. 421–440.
4. N. E. Nör lund, Vorlesungen über Differenzenrechnung, Springer, Berlin, 1924.
5. L. M. Milne-Thomson, The calculus of finite differences, Macmillan, London, 1933.