Search for radial velocity variations in eight M-dwarfs with NIRSPEC/Keck II F. Rodler, R. Deshpande, M. R. Zapatero Osorio, E. L. Martín, M. M. Montgomery, C. del Burgo and O. L. Creevey A&A, 538 (2012) A141 Published online: 16 February 2012 DOI: 10.1051/0004-6361/201117577