@article{Paul:2018EQ, author = "Paul, Bynish and Winkler, Hartmut and Potter, Stephen", title = "{Comparison of the rich optical Fe II line spectra of selected I Zw 1 type objects from two epochs}", doi = "10.22323/1.328.0048", journal = "PoS", year = 2018, volume = "NLS1-2018", pages = "048" }