@article{CRMATH_2021__359_9_1191_0,
     author = {Brezis, Haim and Bruckstein, Alfred},
     title = {A sharp relative isoperimetric inequality for the square},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {1191--1199},
     publisher = {Acad\'emie des sciences, Paris},
     volume = {359},
     number = {9},
     year = {2021},
     doi = {10.5802/crmath.243},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/crmath.243/}
}