@inproceedings{Zhang:2019Cs, author = "Zhang, Ying and Huang, J. and Chen, D. and Zhai, L.M. and Chen, Xu and Lin, Yu-Hui and Fang, Jian-Hua and Nakamura, Yoshiaki", title = "{Study of the sharp "knee" phenomenon of cosmic ray spectrum by using newly upgraded Tibet ASĪ³ experiment}", doi = "10.22323/1.358.0492", booktitle = "Proceedings of 36th International Cosmic Ray Conference {\textemdash} PoS(ICRC2019)", year = 2019, volume = "358", pages = "492" }