[n] A. A. Tishchenko, “Laser Undulator as a Compact X-Ray Source: State of the Art and New Trends”, presented at the RuPAC2021, Alushta, Crimea, Sep.-Oct. 2021, paper TUPSB23, unpublished.
%\cite{Tishchenko:RuPAC2021-TUPSB23} \bibitem{Tishchenko:RuPAC2021-TUPSB23} A. A. Tishchenko, \textquotedblleft{Laser Undulator as a Compact X-Ray Source: State of the Art and New Trends}\textquotedblright, presented at the RuPAC2021, Alushta, Crimea, Sep.-Oct. 2021, paper TUPSB23, unpublished.
@unpublished{tishchenko:rupac2021-tupsb23, author = {A. A. Tishchenko}, title = {{Laser Undulator as a Compact X-Ray Source: State of the Art and New Trends}}, booktitle = {Proc. RuPAC2021}, pages = {}, paper = {TUPSB23}, venue = {Alushta, Crimea}, intype = {presented at the}, series = {Russian Particle Accelerator Conference}, number = {27}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {10}, year = {2021}, issn = {2673-5539}, isbn = {978-3-95-450240-0}, note = {presented at RuPAC2021, Alushta, Crimea, Sep.-Oct. 2021, paper TUPSB23, unpublished}, language = {english} }