@article{Oknyansky:2018PX, author = "Oknyansky, Victor L. and Malanchev, Konstantin L. and Gaskell, C. Martin", title = "{Changing-look Narrow-Line Seyfert 1s?}", doi = "10.22323/1.328.0012", journal = "PoS", year = 2018, volume = "NLS1-2018", pages = "012" }