Sommaire du Fascicule no. 1
p. 225-246
p. 333-340
Sommaire du Fascicule no. 3
Two generalisations of Leighton’s theorem (with an appendix by Giles Gardam and Daniel J. Woodhouse)
p. 743-778
p. 943-961
p. 1005-1047
p. 1049-1075