1. American Society for Testing and Materials , 1971 . Standard recommended practice for use of the terms precision and accuracy as applied to measurement of a property of a material . In: Annual Book for ASTM Standards. Designation El77-71, Philadelphia, Pennsylvania.
2. American Society for Testing and Materials , 1975 . Standard definitions of terms relating to water . In: Annual Book for ASTM Standards. Designation D 1129-74, Philadelphia, Pennsylvania.
3. J. R. Benjamin, and C. A. Cornell , 1970 . Probability, Statistics, and Decision for Civil Engineers . McGraw-Hill Book Co., New York, 684 pp.
4. T. Dalrymple , 1960 . Flood-Frequency Analysis: Manual of Hydrology. U. S. Geological Survey Water Supply Paper 1543-A.
5. I. N. Gibra , 1973 . Probability and Statistical Inference for Scientists and Engineers . Prentice-HallInc., Englewood Cliffs, New Jersey, 596 pp.