%0 Online Multimedia %A Skab, Ihor %A Vasylkiv, Yurij %A Zapeka, Bohdan %A Savaryn, Viktoriya %A Vlokh, Rostyslav %D 2011 %T Media 4: Appearance of singularities of optical fields under torsion of crystals containing threefold symmetry axes %U https://opticapublishing.figshare.com/articles/media/Media_4_Appearance_of_singularities_of_optical_fields_under_torsion_of_crystals_containing_threefold_symmetry_axes/4916984 %R 10.1364/JOSAA.28.001331.m004 %2 https://opticapublishing.figshare.com/ndownloader/files/8269790 %K symmetry axes %K JOSA %K crystal %K media %K singularitie %K 01 July 2011 %K Appearance %K josaa %K torsion %X Originally published in JOSA A on 01 July 2011 (josaa-28-7-1331) %I Optica Publishing Group