Hello, I just want to note that, to my knowledge, the remarkable SIMBAD database is not free of charge. A few of my colleages, who used it intensively a few years age, got very high bills to pay. If the situation has changed, please inform me. Alon Retter > > In principle, the SIMBAD bibliographic database is supposed to perform > this function. However, in practice the biblio is not utterly complete > especially for variable stars. The folks who maintain SIMBAD are aware of this. > Perhaps one thing that could be done is to provide citations to them > suggesting that they be added to the database. > Also, the folks at Sonneberg Observatory maintain a comprehensive > variable-star bibliography, which includes even very obscure materials. > I do not know the status of this database, but I recall reading that efforts > were being made to make it available in machine-readable form. > > \Brian >