E.  Megidish, Halevy, A. , Eisenberg, H. S, Ganany-Padowicz, A. , Habshoosh, N. , and Arie, A. . 2013. ?Compact 2D Nonlinear Photonic Crystal Source Of Beamlike Path Entangled Photons?. Opt. Express, Oe, 21, Pp. 6689?6696. doi:10.1364/OE.21.006689.