Exponentially convergent functional-discrete method for solving   Sturm-Liouville problems with potential including Dirac \delta-function
  In the paper we present a functional-discrete method for solving Sturm-Liouville problems with potential including function from L_{1}(0,1) and \delta-function. For both, linear and nonlinear cases the sufficient conditions providing superexponential convergence rate of the method are obtained. The question of possible software implementation of the method is discussed in detail. The theoretical results are successfully confirmed by the numerical example included in the paper. 
Volodymyr Makarov, Nataliya Rossokhata, Denis Dragunov
math.NA