@article{souto:hal-01389470,
TITLE = {A remark about critical sets in $R^3$},
AUTHOR = {Souto, Juan},
URL = {https://hal.science/hal-01389470},
NOTE = {9 pages},
JOURNAL = {Revista Matem{\'a}tica Iberoamericana},
PUBLISHER = {European Mathematical Society},
VOLUME = {35},
NUMBER = {2},
PAGES = {461-469},
YEAR = {2019},
DOI = {10.4171/RMI/1059},
HAL_ID = {hal-01389470},
HAL_VERSION = {v1},
}