1. R. P. Alger, 1966 . Interpretation of electric logs in fresh water wells in unconsolidated formations . Tulsa, Okla, Society of Professional Well Log Analysts, 7th Annual Logging Symposium, May 8-11, pp. CC1 -CC25 .
2. Memorandum report on test drilling at Norfolk, Virginia
3. Schlumberger Well Surveying Corp . 1958 . Introduction to Schlumberger well logging. Schlumberger Doc. no. 8.
4. Schlumberger Well Surveying Corp . 1962 . Log interpretation charts.