Some technical descriptions (also as pdf) concerning the simulator have been written and are released with each version of Qucs as a ready-to-read postscript document and in its source code form as well. The descriptions have been done besides programming the simulator itself and approach the problems in a pragmatically way. The documentation is maintained as a latex document. Using the program 'latex2html' it is possible to read it online. These pages are going to be updated with each new release of Qucs.
The following citations contain Qucs related publications; either as they appeared on conferences or technical journals.