Tervo, Jani Turunen, Jari Media 3: Self-imaging of electromagnetic fields Originally published in Optics Express on 03 December 2001 (oe-9-12-622) 03 December 2001;electromagnetic fields;media;oe;Optics Express;Self-imaging 2001-12-03
    https://opticapublishing.figshare.com/articles/media/Media_3_Self-imaging_of_electromagnetic_fields/4953530
10.1364/OE.9.000622.m003