Using the SLEDGE Package on Sturm-Liouville Problems Having Nonempty Essential Spectra. - Michael S. P. Eastham; Charles T. Fulton; Steven Pruess (ACM Trans. Math. Softw., 1996)

New Algorithm for Computing the Asymptotic Solutions of a Class of Linear Differential Systems. - B. M. Brown; Michael S. P. Eastham; D. K. R. McCormack (J. Symb. Comput., 1997)

Spectral Concentration for Perturbed Equations of Harmonic Oscillator Type. - B. M. Brown; Michael S. P. Eastham (LMS J. Comput. Math., 2000)