01. Artificial Lift R&D Council (ALRDC)
 
http://www.alrdc.com/production/

 

 

02. OnePetro: A unique library of technical documents and journal articles serving the oil and gas exploration and production industry.
 

https://www.onepetro.org/

 

 

03. Plunger lift design and models.
 
http://petrowiki.org/Plunger_lift_design_and_models
04 :