Calibrations in terms of effective
temperature and metallicity are described in a few papers.
A big effort has been made to identify anonymous stars on the DM charts. We
provide complete lists of the cross-references found,
publication per publication.
In the course of a systematic comparison of photometric data, a
number of problems have been found, but could not
be solved. Generally the data associated with a star identification are not
in agreement with those from other systems, usually the uvby, Geneva and