Sommaire du Fascicule no. 1
Algebraic definition of central dispersions of the 1st kind of the differential equation $y''=Q(t)y$
p. 46-62
p. 76-90
p. 137-157
p. 158-160
Sommaire du Fascicule no. 2
p. 247-259
p. 307-313
Sommaire du Fascicule no. 3
Sommaire du Fascicule no. 4
p. 545-551
p. 552-599