@article{qingwei_yan_qian_2002,  title={Studies of mode lock instability in the HL-1M tokamak},  volume={32},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332002000100027},  DOI={10.1590/S0103-97332002000100027},  number={1},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Qingwei, Yang and Yan, Longwen and Qian, Jun},  year={2002},  month={Mar},  pages={160–164} }