1. Adams, E. and Ames, W. F. (1978). “On contracting interval iteration for nonlinear problems in RN“, Report # 7, Center for Applied Mathematics, The University of Georgia.
2. Alefeld, G. (1978). “Intervallanalytische methoden bei nichtlinearen Gleichungssytemem”, Nr. 43, Technische Universitat Berlin, Preprint Reihe Mathematik, Fachbereich 3.
3. “Further applications of circular arithmetic: Schroeder-like algorithms with error bounds for finding zeros of polynomials”;Gargantini;SIAM J. Numer. Anal.,1978
4. Gay, D. M. (1980). “Using interval arithmetic and a scalar majorizing equation to compute perturbation bounds for solutions to systems of nonlinear algebraic equations”, Technical Report #TR-4, Center for Computational Research in Economics and Management Science, MIT. See also these proceedings.
5. “A globally convergent interval method for computing and bounding real roots”;Hansen;BIT,1978