4. Thrasher, Т.S., «Well Performance Monitoring: Case Histories», SPE 26181, presented at the SPE Gas Technology Symposium, Calgary, Alberta, Canada, June 28-30, 1993.
5. Gilbert, WE, «Flowing and Gas-Lift Well Performance» presented at the spring meeting of the Pacific Coast District, Division of Production, Los Angeles, May 1954, Drilling and Production Practice, pp. 126-157.
