@inproceedings{Caprioli:2021Tu, author = "Caprioli, Damiano and Haggerty, Colby and Blasi, Pasquale", title = "{The Theory of Efficient Particle Acceleration at Shocks}", doi = "10.22323/1.395.0482", booktitle = "Proceedings of 37th International Cosmic Ray Conference {\textemdash} PoS(ICRC2021)", year = 2021, volume = "395", pages = "482" }