The optical counterparts of accreting millisecond X-ray pulsars during quiescenceP. D'Avanzo, S. Campana, J. Casares, S. Covino, G. L. Israel and L. StellaA&A, 508 1 (2009) 297-308DOI: https://doi.org/10.1051/0004-6361/200810249