@article{Weidner2017, author = "Evelin Weidner and Armin Kiessling and Richard Kowarschik", title = "{Media 2: Stable self-focused beams in a photorefractive Bi12TiO20 crystal}", year = "2017", month = "4", url = "https://opticapublishing.figshare.com/articles/media/Media_2_Stable_self-focused_beams_in_a_photorefractive_Bi_sub_12_sub_TiO_sub_20_sub_crystal/4931819", doi = "10.1364/OPEX.12.004993.m002" }