Observations of L1521F: A highly evolved starless core A. Crapsi, P. Caselli, C. M. Walmsley, M. Tafalla, C. W. Lee, T. L. Bourke and P. C. Myers A&A, 420 3 (2004) 957-974 Published online: 04 June 2004 DOI: 10.1051/0004-6361:20035915