Analysis and detection of an incorrect profile shape in a classical scatterometric process Zaki Sabit Fawzi, Stéphane Robert, Ismail El Kalyoubi and Bernard Bayard Eur. Phys. J. Appl. Phys., 76 3 (2016) 31001 Published online: 09 January 2017 DOI: 10.1051/epjap/2016160157