CT wishes to thank Thomas Augusteijn and Ronald Mennickent for many ideas and fruitful discussions and for not turning away when being confronted with the behaviour of WW Cet for the zillionth time. The stay of CT in Chile has been financially supported by the Deutscher Akademischer Austauschdienst (DAAD) under grant D/94/14720. This work has made use of the SIMBAD database which is maintained by the CDS, Strasbourg.
© European Southern Observatory (ESO) 1997
Online publication: April 8, 1998