1. R. Moore, Interval Analysis, edited by E. Cliffs (Prentice-Hall, 1966).
2. On the solution of linear algebraic equations with interval coefficients
3. R. Moore, Method and applications of interval analysis, edited by Philadelphia (SIAM, 1979).
4. H. J. Alefeld, G., Introduction to interval computations, edited by London (Academic Press, 1983).
5. C. Singh and M. Hanson, Florida State University Technical Report M-785, 1–15 (1988).