Dear dr. Kato and others, >Please note that the maximum of the main hump >has shown a slight negative phase shift, implying that the period has >decrease, rather than increased. Further observations are naturally >very strongly encouraged! > this is also case in SW UMa and some other systems if I remember well. Is there some explanation on that? Regards Rudolf > >Regards, >Taichi Kato >VSNET Collaboration team > > >. >