@techreport{Friedreich:1527499,
author = "Friedreich, Susanne and Barna, Daniel and Caspers, Fritz
and Dax, Andreas and Hayano, Ryugo S and Hori, Masaki and
Horváth, Dezső and Juhász, Bertalan and Kobayashi,
Takumi and Massiczek, Oswald and Sótér, Anna and
Todoroki, Koichi and Widmann, Eberhard and Zmeskal, Johann",
title = "{Microwave spectroscopic study of the hyperfine structure
of antiprotonic helium-3}",
archivePrefix = "arXiv",
eprint = "1303.2831",
year = "2013",
url = "http://cds.cern.ch/record/1527499",
note = "Comments: 15 pages, 9 figures. arXiv admin note:
substantial text overlap with arXiv:1102.5286",
}