%0 Journal Article %T Monotone Iterative Technique for First-Order Nonlinear Periodic Boundary Value Problems on Time Scales %A Zhao Ya-Hong %A Sun Jian-Ping %J Advances in Difference Equations %D 2010 %I Springer %X We investigate the following nonlinear first-order periodic boundary value problem on time scales: , , . Some new existence criteria of positive solutions are established by using the monotone iterative technique. %U http://www.advancesindifferenceequations.com/content/2010/620459