@article{article22f2479d,
title   = {Profiles of emission lines in active galactic nuclei - iv. Analysis of a low-ionization line profile sample},
author = {Busko, I C and Steiner, João Evangelista},
year = {1992},
doi = {10.1093/mnras/258.2.306},
journal   = {Monthly Notices Royal Astronomical Society}
}