6S?odczyk Damian,Stryczek Jaros?aw.Designing a Pumping System of Gear Pumps Featuring the Involute Internal Gearing[J]Key Engineering Materials,2012(490).
7John H. Hall.Internal gear pumps – your second choice for thin liquids[J]World Pumps,2005(469).
8Lewis E Ballard,Cyndi Hoffner.Selecting internal gear pumps for difficult duties[J]World Pumps,2005(462).
9Xu Hong,Yang Lijuan,Jing Baode.Research of Internal leakage Theory Model in the Exterior Meshing Gear PumpInternational Conference on Intelligent Human-Machine Systems and Cybernetics,2009.
10Mimmi G C,Pennacchi P E.Involute gear pumps ver-sus lobe pumps:a comparisonTransactions ofASME:Journal of Mechanical Design,1997.