[1]. Metzger L. Daniel, "Electronic Circuit Behavior"

[2]. Ghausi, "Electronic Circuit"

[3]. Giuseppe Massobrio, Paolo Antognetti, "Semiconductor Device Modeling with SPICE", second edition. McGraw-Hill, Inc. 1988

[4]. Adel S. Sedra, Kenneth C. Smith, "Microelectronic Circuits", fourth edition, Oxford University Press, 1998