@inproceedings{Steffens:20143n, author = "Steffens, Erhard", title = "{Concluding remarks}", doi = "10.22323/1.182.0070", booktitle = "Proceedings of XVth International Workshop on Polarized Sources, Targets, and Polarimetry {\textemdash} PoS(PSTP2013)", year = 2014, volume = "182", pages = "070" }