[n] V. D. Shiltsev, “General Approach to Physics Limits of Ultimate Colliders”, in Proc. IPAC'21, Campinas, Brazil, May 2021, pp. 2624-2627. doi:10.18429/JACoW-IPAC2021-WEPAB017
%\cite{Shiltsev:IPAC21-WEPAB017} \bibitem{Shiltsev:IPAC21-WEPAB017} V. D. Shiltsev, \textquotedblleft{General Approach to Physics Limits of Ultimate Colliders}\textquotedblright, in \emph{Proc. IPAC’21}, Campinas, Brazil, May 2021, pp. 2624--2627. \url{doi:10.18429/JACoW-IPAC2021-WEPAB017}
@inproceedings{shiltsev:ipac21-wepab017, author = {V. D. Shiltsev}, title = {{General Approach to Physics Limits of Ultimate Colliders}}, booktitle = {Proc. IPAC'21}, pages = {2624--2627}, paper = {WEPAB017}, venue = {Campinas, Brazil, May 2021}, publisher = {JACoW Publishing, Geneva, Switzerland}, doi = {10.18429/JACoW-IPAC2021-WEPAB017}, url = {https://jacow.org/ipac2021/papers/WEPAB017.pdf}, language = {english} }