@article{Felden:20149s, author = "Felden, Olaf and Gebel, Ralf and Maier, Rudolf and Mey, Sebastian", title = "{Long term performance of the COSY/Jülich polarized ion source }", doi = "10.22323/1.182.0068", journal = "PoS", year = 2014, volume = "PSTP2013", pages = "068" }