The files containing the bibliographic references to the literature published from 1969 to the present day are located in the directory bda/bibliographie. There is one file for the bibliography and one file for the keyword for each year.
The files containing the references of the data sources are located in the directory bda/references. There is one reference file for each datatype.
The files with the Alter et al. bibliography (1900 to 1973) and those from the catalogue of Lyngå (1987) are normally distributed in the cluster directories. The files for the clusters which do not have yet their own directory are collected in the following directories bda/catalogue/budapest and bda/catalogue/lynga respectively.
Finally, the original UBV photographic data from Moffat and Vogt (1972) are kept in bda/catalogue/bochum.