Real-time optical path difference compensation at the Plateau de Calern I2T interferometer B. Sorrente, F. Cassaing, G. Rousset, S. RobbeDubois and Y. Rabbia A&A, 365 2 (2001) 301-313 Published online: 15 January 2001 DOI: 10.1051/0004-6361:20000004