@article{hugill_1997,  title={The L- to H-Mode Transition - an Experimental Viewpoint},  volume={27},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97331997000300012},  DOI={10.1590/S0103-97331997000300012},  number={3},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Hugill, J.},  year={1997},  month={Sep},  pages={407–441} }