New low-mass pre-main sequence spectroscopic binaries in Orion E. Covino, C. Melo, J. M. Alcalá, G. Torres, M. Fernández, A. Frasca and R. Paladino A&A, 375 1 (2001) 130-144 Published online: 15 August 2001 DOI: 10.1051/0004-6361:20010842