1. http://rkb.home.cern.ch/rkb/PH14PP/node206.html#smit80
2. http://rkb.home.cern.ch/rkb/PH14PP/node206.html#kemm80
3. Kemmer, J.: Nucl. Instr. Methods A. 169, 499 (1980)
4. Apollo Go, Anna Peisert. Measurement of capacitance on Preshower detectors. CMS IN 2000/041
5. Sze, S.M.: Physics of Semiconductor Devices. Wiley, New York (1981)