The old LISEM website (www.itc.nl/lisem) is no longer active. The model became open source two years ago (openLISEM) and all developments on de old version have stopped (LISEM v1.64). It is advisable to use the latest open source version. You can find it under downloads on this website. The source code is also available un downloads. This website will gradually contain all relevant information: basic theory, how to run the model, an example database and of course news.