Ugly's Electrical References
George V. Hart & Sammie Hart & William C. Buchanan
Hacking Digital Cameras
Chieh Cheng & Auri Rahimzadeh
Understanding Digital Signal Processing, 3rd Edition
Richard G. Lyons
Gebrochene Herzen (Stufe 1)
Theo Scherling & Elke Burger
Circuit Design with VHDL
Volnei A. Pedroni