Determination of lattice parameter and of N lattice location in InxGa1-xNyAs1-y/GaAs and GaNyAs1-y/GaAs epilayers - Bisognin,G; De,Salvador D; Mattevi,C; Berti,M; Drigo,AV; Ciatto,G; Grenouillet,L; Duvaut,P; Gilet,P; Mariette,H (JOURNAL OF APPLIED PHYSICS, 2004)