@article{ASCFM_1981__69_19_87_0,
     author = {Martias, C.},
     title = {Filtrage non lin\'eaire dans des espaces de {Hilbert} r\'eels et s\'eparables},
     journal = {Annales scientifiques de l'Universit\'e de Clermont. Math\'ematiques},
     pages = {87--113},
     publisher = {UER de Sciences exactes et naturelles de l'Universit\'e de Clermont},
     volume = {69},
     number = {19},
     year = {1981},
     mrnumber = {645569},
     zbl = {0488.60054},
     language = {fr},
     url = {http://archive.numdam.org/item/ASCFM_1981__69_19_87_0/}
}