XMM-Newton observation of the persistent Be/NS X-ray binary pulsar RX J0440.9+4431N. La Palombara, L. Sidoli, P. Esposito, A. Tiengo and S. MereghettiA&A, 539 (2012) A82DOI: https://doi.org/10.1051/0004-6361/201118221