1. The determination of multiphase pressure drops and flow capacities in downhole safety valves;Ashford;JPT,1974
2. Two-Phase Flow Through Wellhead Chokes;Fortunati,1972
3. Critical and Subcritical Flow of Multiphase Mixtures Through Chokes;Perkins,1993
4. An Improved Method for Predicting Oil and Gas Well Production Performance;Duns;Society of Petroleum Engineers Journal,1993
5. Flowing and gas-lift well performance;Gilbert;API Drilling Production Practice,1954