Sturm-Liouville operators on time scales
  We establish the connection between Sturm-Liouville equations on time scales and Sturm--Liouville equations with measure-valued coefficients. Based on this connection we generalize several results for Sturm-Liouville equations on time scales which have been obtained by various authors in the past. 
Jonathan Eckhardt and Gerald Teschl
math.SP math.CA