1. Standard Procedure for Testing Drilling Fluids, API Recommended Practice RP13 B, seventh edition. American Petroleum Institute, April, 1978, Dallas.
2. “Development of a Reproducible Method of Formulating and Testing Drilling Fluids”;Sinha;Soc. Petrol. Eng. J.,1969
3. “Compensated Gamma Ray Densimeter Measures Slurry Densities in Flow”;Guest;Petrol. Eng.,1973
4. “A Direct Indicating Viscometer for Drilling Fluids”;Savins;API Drill. Prod. Prac.,1954
5. “Field Method of Evaluating Annular Performance of Drilling Fluids”;Walker;J. Petrol. Technol.,1974