The solution of boundary-value problems in ordinary differential equations employing iterative differential analyzer equipment

R. Tomovic W.J. Karplus High-speed analog computers John Wiley and Sons, Inc. New York-London 1962 pp 92-95

F.G. Tricomi Differential equations Hafner Publishing Company New York 1961 pp 89-91

I.M. Vitenburg E.A. Gluzberg On the utilization of electric models for the solution of algebraic transcendental and integral boundary-value problems Automatika i telemechanika July 1956 vol 17 pp 590-600