1. An elementary theory of the Bourdon gage;Wolf;J. Appl. Mech.,1946
2. Theories on Bourdon tubes;Jennings;Trans. ASME,1956
3. A new differential pressure gage;Olson;J. Chem. Phys.,1929
4. Bonfig , K.W. 1988 Technische Druck- und Kraftmessung
5. Various applications of resonant pressure sensor chip based on 3-D micromachining;Harada;Sens. Actuators A,1999