[n] S. H. Kim, “RF Coupler”, presented at the SRF'23, Grand Rapids, MI, USA, Jun. 2023, paper FRTUT02, unpublished.
%\cite{Kim:SRF23-FRTUT02} \bibitem{Kim:SRF23-FRTUT02} S. H. Kim, \textquotedblleft{RF Coupler}\textquotedblright, presented at the SRF’23, Grand Rapids, MI, USA, Jun. 2023, paper FRTUT02, unpublished.
@unpublished{kim:srf23-frtut02, author = {S. H. Kim}, title = {{RF Coupler}}, booktitle = {Proc. SRF'23}, pages = {}, paper = {FRTUT02}, venue = {Grand Rapids, MI, USA}, intype = {presented at the}, series = {International Conference on RF Superconductivity}, number = {21}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {8}, year = {2023}, issn = {2673-5504}, isbn = {978-3-95-450234-9}, note = {presented at SRF'23, Grand Rapids, MI, USA, Jun. 2023, paper FRTUT02, unpublished}, language = {english} }