... Peterson, Dynamic Equations on Time Scales: An Introdution with Applications,Birkh ¨ auser, Boston, Mass, USA, 2001.23 M. Bohner and A. Peterson, Dynamic Equations on Time Scales,Birkh ¨ auser, ... Perera, and D. R. Vivero, “Multiple positive solutions in the sense of distributions of singular BVPs on time scales and an application to Emden-Fowler equations, ”Advances in Difference Equations, ... second-order nonautonomous impulsive differential equations, ” International Journal of Qualitative Theory of Differential Equations and Applications, vol. 2,no. 1, pp. 112–124, 2008.22 M. Bohner and...