A soft X-ray image of the MoonJ. H. M. M. Schmitt, J. Trümper, S. L. Snowden et al.|Nature|1991Cited by 84
An Updated Calibration of the ROSAT PSPC Particle Background for the Analysis of Diffuse and Extended SourcesPaul P. Plucinsky, E. Pfeffermann, S. L. Snowden et al.|The Astrophysical Journal|1993Cited by 49
The energy-dependent temporal variation of the ROSAT PSPC gainM. Prieto, S. L. Snowden, G. Hasinger|Astronomy & Astrophysics Supplement Series|1996Cited by 35