1. An analogue pure fluid amplifier;Dexter,1962
2. Notes on a proportional fluid amplifier;Reily,1962
3. Development of new piezoelectric ceramic actuator;Takahashi;New Materials & New Process,1985
4. A power air jet actuator with piezotranslator drive stage;Zhao;Mechatronics,1991
5. Electro-pneumatic signal converter;Frish,1986