1. Revised bean and performance formula for Lake Maracaibo Wells;Achong,1961
2. Revised bean performance equation for East Baghdad oil wells;Al-Attar,1988
3. An evaluation of critical multiphase flow performance through wellhead chokes;Ashford;J. Pet. Tech.,1974
4. Determining multiphase pressure drop and flow capabilities in down hole safety valves;Ashford;J. Pet.Tech.,1975
5. Bean performance-lake wells;Baxendell,1957