1. Gilbert, W. De magnete, magneticisque corporibus, et de magno magnete tellure: Physiologia noua plurimis et argumentis, et experimentis demonstrata: Excudebet Petrus Short, 1600.
2. On the Equilibrium of Liquid Conducting Masses Charged With Electricity;Rayleigh;Philos. Mag. Series 5,1882
3. The Electrical Discharge From Liquid Points, and a Hydrostatic Method of Measuring the Electric Intensity at Their Surfaces;Zeleny;Phys. Rev.,1914
4. Cooley J.F. Electrical Method of Dispersing Fluids. Google Patents, US745276 A, 1903.
5. Cooley J.F. Apparatus for Electrically Dispersing Fluids. Google Patents, US692631 A, 1902.