Bibcode
                                    
                            Lazaro, C.; Solheim, J.-E.; Arevalo, M. J.
    Bibliographical reference
                                    IN: White dwarfs; Proceedings of IAU Colloquium 114th, Hanover, NH, Aug. 15-19, 1988 (A90-32719 13-90). Berlin and New York, Springer-Verlag, 1989, p. 458-461.
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                        1989
            
  Citations
                                    3
                            Refereed citations
                                    3
                            Description
                                    The preliminary results of time-resolved spectroscopy of the He White
Dwarf system AM CVn are presented. Spectral variations at different
photometric periods have been searched for. These are found at different
time scales although this does not particularly favor any of the
searched periods.