M Adivar,
Y Raffoul - Electronic Journal of Qualitative Theory of …, 2009 - eudml.org
• When does a to tal ly nonlinear delay dynamic equation x∆(t)=-a (t) h (x (t))+ G (t, x (δ (t))),
t∈ T1,(3) have a non-zero periodic so lution which maps a periodic time s cale T1 into …