[n] A. J. Sierk, “Termination Effects in Helical Waveguides”, in Proc. PAC'71, Chicago, IL, USA, Mar. 1971, pp. 162-164.
%\cite{Sierk:PAC71} \bibitem{Sierk:PAC71} A. J. Sierk, \textquotedblleft{Termination Effects in Helical Waveguides}\textquotedblright, in \emph{Proc. PAC’71}, Chicago, IL, USA, Mar. 1971, pp. 162--164.
@inproceedings{sierk:pac71, author = {A. J. Sierk}, title = {{Termination Effects in Helical Waveguides}}, booktitle = {Proc. PAC'71}, pages = {162--164}, paper = {}, venue = {Chicago, IL, USA}, series = {Particle Accelerator Conference}, number = {4}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {6}, year = {1971}, language = {english} }