Swift X-ray and ultraviolet observations of the shortest orbital period double-degenerate system RX J0806.3+1527 (HM Cnc)Paolo Esposito, Gian Luca Israel, Simone Dall'Osso and Stefano CovinoA&A, 561 (2014) A117DOI: https://doi.org/10.1051/0004-6361/201322719
