V. Lakshmikantham et B. Kaymakcalan, MONOTONE FLOWS AND FIXED-POINTS FOR DYNAMIC-SYSTEMS ON TIME SCALES, Computers & mathematics with applications, 28(1-3), 1994, pp. 185-189
Utilizing dynamic systems on time scales, the theory of monotone flows
and fixed points is considered, which unifies the theory of continuou
s and discrete dynamic systems.