LTspice:
LTspice Einführung, deutsch, von Prof. Dr. Heinz Siweris, Sep. 2009
LTspice Basic Demo Circuits (by M. Schubert)

Matlab / Simulink / Stateflow:
Introduction to Matlab for Engineering Students, by David Houcqu, Nothwestern University
Skript Schubert als Extrakt aus www.matlabbuch.de

VHDL:
VHDL_Language_QuickReferenceCard_(Qualis).pdf,
VHDL_StdLogic1164_QuickReferenceCard_(Qualis).pdf, 

Gajim & Jabber-Chat Installation:
Installation Gajim & Jabber Chat