[n] Y. G. Liu, “Compact 2.45 GHz ECR ion source with coaxial coupling system”, presented at the ECRIS'22, Ahmedabad, India, Oct. 2022, paper WEP1PG011, unpublished.
%\cite{Liu:ECRIS22-WEP1PG011} \bibitem{Liu:ECRIS22-WEP1PG011} Y. G. Liu, \textquotedblleft{Compact 2.45 GHz ECR ion source with coaxial coupling system}\textquotedblright, presented at the ECRIS’22, Ahmedabad, India, Oct. 2022, paper WEP1PG011, unpublished.
@unpublished{liu:ecris22-wep1pg011, author = {Y. G. Liu}, title = {{Compact 2.45 GHz ECR ion source with coaxial coupling system}}, pages = {}, paper = {WEP1PG011}, venue = {Ahmedabad, India, Oct. 2022}, intype = {presented at the}, series = {International Workshop on ECR Ion Sources}, number = {25}, publisher = {JACoW Publishing, Geneva, Switzerland}, note = {presented at ECRIS'22, Ahmedabad, India, Oct. 2022, paper WEP1PG011, unpublished}, language = {english} }