Change happens so quickly in Cyber space. Consequently, ASDN aims to preserve valuable materials at our stable ASDN site to give permanency to these many useful tools, documents and data. This material is scattered on publicly-accessible -- but often lesser known -- sites all around the world and so is in risk of disappearing when the sites close or the authors move to another institution.

Obviously, we will give full acknowledgement in the archives to the authors of these contributions (if this information is known to us). We hope that the authors, by sharing their work with the large and diverse audience of ASDN, may in part have their efforts rewarded with beneficial publicity.