X-ray emission of brown dwarfs: towards constraining the dependence on age, luminosity, and temperatureB. Stelzer, G. Micela, E. Flaccomio, R. Neuhäuser and R. JayawardhanaA&A, 448 1 (2006) 293-304DOI: https://doi.org/10.1051/0004-6361:20053677