uvby photometry of the magnetic CP stars 45 Leonis, HR 4330, 49 Herculis, and HR 6718S. J. Adelman, K. E. Rayle and C.-L.M. PiAstron. Astrophys. Suppl. Ser., 136 2 (1999) 379-383DOI: https://doi.org/10.1051/aas:1999221