@article{CRMATH_2011__349_5-6_327_0,
     author = {Niculescu, Silviu-Iulian and Putinar, Mihai},
     title = {A toric {Positivstellensatz} with applications to delay systems},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {327--329},
     publisher = {Elsevier},
     volume = {349},
     number = {5-6},
     year = {2011},
     doi = {10.1016/j.crma.2010.11.018},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2010.11.018/}
}