[n] H. Hahn and H. J. Halama, “Investigation of Superconducting Niobium Cavities at S-Band”, in Proc. PAC'69, Washington D.C., USA, Mar. 1969, pp. 1013-1018.
%\cite{Hahn:PAC69} \bibitem{Hahn:PAC69} H. Hahn and H. J. Halama, \textquotedblleft{Investigation of Superconducting Niobium Cavities at S-Band}\textquotedblright, in \emph{Proc. PAC’69}, Washington D.C., USA, Mar. 1969, pp. 1013--1018.
@inproceedings{hahn:pac69, author = {H. Hahn and H. J. Halama}, title = {{Investigation of Superconducting Niobium Cavities at S-Band}}, booktitle = {Proc. PAC'69}, pages = {1013--1018}, paper = {}, venue = {Washington D.C., USA}, series = {Particle Accelerator Conference}, number = {3}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {6}, year = {1969}, language = {english} }