and W. J. Firth, “Dynamics of self-trapped beams with phase dislocation in saturable [K]{}err and quadratic nonlinear media,” Phys. Rev. E **58**, 3916–3930 (1998).

D. Suter and T. Blasberg, “Stabilization of transverse solitary waves by a nonlocal response of the nonlinear medium,” Phys. Rev. A **48**, 4583–4587 (1993).

O. Bang, W. Kr[ó]{}likowski, J. Wyller, and J. J. Rasmussen, “Collapse arrest and soliton stabilization in nonlocal nonlinear media,” Phys. Rev. E **66**, 046619 (2002).

W. Kr[ó]{}likowski, O. Bang, N. I. Nikolov, D. Neshev, J. Wyller, J. J. Rasmussen, and D. Edmundson, “Modulational instability, solitons and beam propagation in spatially nonlocal nonlinear media,” J. Opt. B: Quantum Semiclass. Opt. **6**, S288–S294 (2004).

D. Briedis, D. Petersen, D. Edmundson, W. Kr[ó]{}likowski, and O. Bang, “Ring vortex solitons in nonlocal nonlinear media,” Opt. Express **13**, 435–443 (2005).

S. Lopez-Aguayo, A. S. Desyatnikov, Y. S. Kivshar, S. Skupin, W. Kr[ó]{}likowski, and O. Bang, “Stable rotating dipole solitons in nonlocal optical media,” Opt. Lett. **31**, 1100–1102 (2006).

S. Skupin, M. Grech, and W. Kr[ó]{}likowski, “Rotating soliton solutions in nonlocal nonlinear media,” Opt. Express **16**, 9118–9131 (2008).

F. Maucher, D. Buccoliero, S. Skupin, M. Grech, A. S. Desyatnikov, and W. Krolikowski, “[Tracking azimuthons in nonlocal nonlinear media]{},” 