1. A treatment for boundary singularities in finite-difference solutions of Laplace's equation;Whiting;Trans. IEEE,1968
2. The accuracy of finite-difference solutions of Laplace's equation;Duncan;Trans. IEEE,1967
3. High-order polynomial triangular finite elements for potential problems;Silvester;J. Inst. Engng. Sci.,1969
4. Field Theory of Guided Waves;Collin,1960
5. Upper and lower bounds on the characteristic impedence of TEM mode transmission lines;Carson;Trans. IEEE,1966