Starspot photometry with robotic telescopes - Continuous UBV and photometry of 23 stars in 1991–1996K. G. Strassmeier, J. Bartus, G. Cutispoto and M. RodonóAstron. Astrophys. Suppl. Ser., 125 1 (1997) 11-63DOI: https://doi.org/10.1051/aas:1997369