MASSIVE STAR POPULATIONS IN NEARBY
GALAXIES - André Maeder and Peter S. Conti (1994)
EMISSION-LINE DIAGNOSTICS OF EXTRAGALACTIC
JETS - A.S. Wilson (1992)
ON THE SULFUR AND NITROGEN ABUNDANCES
IN THE NUCLEUS OF SEYFERT 2 AND LINER GALAXIES - T. Storchi-Bergmann
and M.G. Pastoriza (1990)
OPTICAL SPECTROSCOPY OF LINERS AND LOW-LUMINOSITY
SEYFERT NUCLEI - Luis C. Ho (1996)