... SIGMA observations of X-ray NovaVelorum 1993 (GRS 1009-45) // Astronomy and ... the X-ray nova GRS 1737-31 // Astronomy and Astrophysics (1999) Trudolyubov, S., et ...
... SIGMA observations of X-ray NovaVelorum 1993 (GRS 1009-45) // Astronomy and ... the X-ray nova GRS 1737-31 // Astronomy and Astrophysics (1999) Trudolyubov, S., et ...