Outer Approximation of the Spectrum of a Fractal Laplacian. - Tyrus Berry; Steven M. Heilman; Robert S. Strichartz (Exp. Math., 2009)

Orthogonal Polynomials with Respect to Self-Similar Measures. - Steven M. Heilman; Philip Owrutsky; Robert S. Strichartz (Exp. Math., 2011)