@article{Greene2017, author = "Pamela L. Greene and Dennis G. Hall", title = "{Media 1: Focal shift in vector beams}", year = "2017", month = "4", url = "https://opticapublishing.figshare.com/articles/media/Media_1_Focal_shift_in_vector_beams/4952054", doi = "10.1364/OE.4.000411.m001" }