Thermal states of coldest and hottest neutron stars in soft X-ray transients D. G. Yakovlev, K. P. Levenfish, A. Y. Potekhin, O. Y. Gnedin and G. Chabrier A&A, 417 1 (2004) 169-179 Published online: 16 March 2004 DOI: 10.1051/0004-6361:20034191