@article{AFST_2020_6_29_4_977_0,
     author = {Lorenzo Brasco},
     title = {On principal frequencies and isoperimetric ratios in convex sets},
     journal = {Annales de la Facult\'e des sciences de Toulouse : Math\'ematiques},
     pages = {977--1005},
     publisher = {Universit\'e Paul Sabatier, Toulouse},
     volume = {Ser. 6, 29},
     number = {4},
     year = {2020},
     doi = {10.5802/afst.1653},
     language = {en},
     url = {https://afst.centre-mersenne.org/articles/10.5802/afst.1653/}
}