<?xml version="1.0"?>
<response><item key="0"><nothing>Yana Muzychenko, Alexander Zinchik, Sergey Stafeev, M. G. Tomilin, "Fractal diffraction elements with variable transmittance and phase shift", 22nd Congress of the International Commission for Optics: Light for the Development of the World, 2011, [DOI: 10.1117/12.903551] </nothing></item></response>
