Simultaneous X-ray spectroscopy of YY Gem with Chandra and XMM-NewtonB. Stelzer, V. Burwitz, M. Audard, M. Güdel, J.-U. Ness, N. Grosso, R. Neuhäuser, J. H. M. M. Schmitt, P. Predehl and B. AschenbachA&A, 392 2 (2002) 585-598DOI: https://doi.org/10.1051/0004-6361:20021188