List of citations in Numdam for : The Hilbert modular group, resolution of the singularities at the cusps and related problems
Séminaire Bourbaki : vol. 1970/71, exposés 382-399, Séminaire Bourbaki, no. 13 (1971), Talk no. 396, 14 p.
Compositio Mathematica, Volume 43 (1981) no. 3, pp. 297-315.