The field singularity at the edge of an electrode on a semiconductor surface. - John A. Lewis; E. Wasserstrom (Bell Syst. Tech. J., 1970)

The potential due to a charged metallic strip on a semiconductor surface. - E. Wasserstrom; James McKenna (Bell Syst. Tech. J., 1970)

Solving Boundary-Value Problems by Imbedding. - E. Wasserstrom (J. ACM, 1971)