[n] B. Liu, Y. L. Chi, M. Gu, and C. Zhang, “New Electron Gun System for BEPCII”, presented at the PAC'05, Knoxville, TN, USA, May 2005, paper TPPE059, unpublished.
%\cite{Liu:PAC05-TPPE059} \bibitem{Liu:PAC05-TPPE059} B. Liu, Y. L. Chi, M. Gu, and C. Zhang, \textquotedblleft{New Electron Gun System for BEPCII}\textquotedblright, presented at the PAC’05, Knoxville, TN, USA, May 2005, paper TPPE059, unpublished.
@unpublished{liu:pac05-tppe059, author = {B. Liu and Y. L. Chi and M. Gu and C. Zhang}, title = {{New Electron Gun System for BEPCII}}, booktitle = {Proc. PAC'05}, paper = {TPPE059}, venue = {Knoxville, TN, USA, May 2005}, intype = {presented at the}, series = {Particle Accelerator Conference}, number = {21}, publisher = {JACoW Publishing, Geneva, Switzerland}, url = {https://jacow.org/p05/papers/TPPE059.pdf}, note = {presented at PAC'05, Knoxville, TN, USA, May 2005, paper TPPE059, unpublished}, language = {english} }