@article{CRMATH_2009__347_15-16_939_0,
     author = {Zarouf, Rachid},
     title = {Une am\'elioration d'un r\'esultat de {E.B.} {Davies} et {B.} {Simon}},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {939--942},
     publisher = {Elsevier},
     volume = {347},
     number = {15-16},
     year = {2009},
     doi = {10.1016/j.crma.2009.04.012},
     language = {fr},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2009.04.012/}
}