Solitonic vortices in Bose–Einstein condensates M. Tylutki, S. Donadello, S. Serafini, L.P. Pitaevskii, F. Dalfovo, G. Lamporesi and G. Ferrari Eur. Phys. J. Special Topics, 224 3 (2015) 577-583 Published online: 09 April 2015 DOI: 10.1140/epjst/e2015-02389-7