Sommaire du Fascicule no. 1
p. 93-98
THE SINGLE-VALUED EXTENSION PROPERTY IS NOT PRESERVED UNDER SUMS AND PRODUCTS OF COMMUTING OPERATORS
p. 99-104
Sommaire du Fascicule no. 2
p. 243-255
p. 291-319
p. 321-332
p. 391-403
p. 405-409