10 citations · 11 across the 4 of their papers we have counts for
1 paper · 1 filter
W. Pietsch, K. Bischoff, Th. Boller
Six Narrow-Line Seyfert 1 galaxies have been discovered in optical follow-up spectroscopy of nuclei of galaxies selected for their high X-ray flux in the ROSAT All Sky Survey. We g…