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We report on four observations of the black hole candidate GX 339-4 collectedin the spectral range 0.4-140 keV with the BeppoSAX satellite during 1997. Allour spectra are typical of a black hole candidate in its low-hard state, i.e.are dominated by the hard tail of the emission from the corona. Although thedirect emission from the accretion disk in the soft X-ray range is weak,spectra are well described only with models that take into consideration theCompton reflection of hard X-rays from the corona onto the surface of anaccretion disk of non negligible extent.Comment: 6 pages, LaTeX, 4 picture

The X-ray spectrum of the black hole candidate GX339-4 in a low state