@book{AST_2002__283_,
     author = {Robbiano, Luc and Zuily, Claude},
     title = {Analytic theory for the quadratic scattering wave front set and application to the Schr\"odinger equation},
     series = {Ast\'erisque},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {283},
     year = {2002},
     zbl = {1029.35001},
     language = {mul},
     url = {http://archive.numdam.org/item/AST_2002__283_/}
}

Robbiano, Luc; Zuily, Claude. Analytic theory for the quadratic scattering wave front set and application to the Schrödinger equation. Astérisque, no. 283 (2002), 138 p. http://numdam.org/item/AST_2002__283_/