@inproceedings{Grupe:20111N, author = "Grupe, Dirk", title = "{WPVS 007 and Mkn 335: the link between NLS1s and BAL QSOs}", doi = "10.22323/1.126.0053", booktitle = "Proceedings of Narrow-Line Seyfert 1 Galaxies and their place in the Universe {\textemdash} PoS(NLS1)", year = 2011, volume = "126", pages = "053" }