@article{CRMATH_2007__345_10_579_0,
     author = {Ezequiel R. Barbosa and Marcos Montenegro},
     title = {On the continuity of the second {Sobolev} best constant},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {579--582},
     publisher = {Elsevier},
     volume = {345},
     number = {10},
     year = {2007},
     doi = {10.1016/j.crma.2007.10.026},
     language = {en},
}