Sommaire du Fascicule no. 2
Sommaire du Fascicule no. 3
On existence of positive periodic solutions of a kind of Rayleigh equation with a deviating argument
p. 189-196
p. 221-240
p. 265-267
Sommaire du Fascicule no. 4
p. 305-327
p. 337-350
p. 351-352
Sommaire du Fascicule no. 5
p. 405-418
p. 431-432