Photometric study of eclipsing binary RV Tri
  We present new photometric observations of RV Tri.   A complete light curve was obtained in the R and V filters.   These light curves were processed by the Wilson-Devinney (WD) code and the FOTEL to get solution of this eclipsing binary system. We discuss characteristics of the system and compare our model with a previous calculation. Our observations of primary minima and the comparison with those predicted on the base of the GCVS catalogue indicates that there are significant differences. We discuss these differences in the context of period change. 
F. Hroch, M. Basny