Classical Electrodynamics (Undergraduate Course) - Proff. Richard Fitzpatric
Complex Analysis - George Cain (Chapter 7 - Harmonic Functions)
Complex Analysis - George Cain (Chapter 5 - Cauchy's Theorem)
Complex Analysis - George Cain (Chapter 1 - Complex Numbers)
Bio Instrumentation - John D. Enderle
General Relativity
Einstein and Space-Time Units - HARADA
Complex Analysis - George Cain (Chapter 3 - Elementary Functions)