Calibrating the Cepheid Period-Luminosity relation with the VLTI M. Marengo, M. Karovska, D. Sasselov, C. Papaliolios, J. T. Armstrong and T. E. Nordgren EAS Publications Series, 6 (2003) 265 Published online: 31 January 2003 DOI: 10.1051/eas:2003026