On calculation of eigenvalues of Sturm-Liouville problem with indefinite   weight having self-similar primitive
  A method of calculation of eigenvalues of the problem $-y''-\lambda\rho y=0$, $y(0)=y(1)=0$, where $\rho$ is a distribution having self-similar primitive $P\in L_2[0,1]$, is described. 
A.A.Vladimirov