Evidence for a Neutron Star in the non-pulsating massive X-ray binary 4U2206+54J. M. Torrejón, I. Kreykenbohm, A. Orr, L. Titarchuk and I. NegueruelaA&A, 423 1 (2004) 301-309DOI: https://doi.org/10.1051/0004-6361:20035743
