1. A. S. Householder, Principles of Numerical Analysis, McGraw-Hill, New York, 1953.
2. J. H. Wilkinson, Rounding Errors in Algebraic Processes, Prentice-Hall, Englewood Cliffs, N. J., 1963.
3. Function Evaluation in Unnormalized Arithmetic
4. Unnormalized Floating Point Arithmetic