[1] [1] C Conti, M Peccianti, G Assanto. Route to nonlocality and observation of accessible solitons[J]. Phys Rev Lett, 2003, 91(7): 073901.

[2] [2] M Segev, B Crosignani, A Yariv, et al.. Spatial solitons in photorefractive media[J]. Phys Rev Lett, 1992, 68(7): 923-926.

[3] [3] C Rotschild, O Cohen, O Manela, et al.. Solitons in nonlinear media with an infinite range of nonlocality: first observation of coherent elliptic solitons and of vortex-ring solitons[J]. Phys Rev Lett, 2005, 95(21): 213904.

[4] [4] Y V Kartashov, V A Vysloukh, L Torner. Multipole surface solitons in thermal media[J]. Opt Lett, 2009, 34(3): 283-285.

[5] [5] W Krolikowski, O Bang, N I Nikolov, et al.. Modulational instability, solitons and beam propagation in spatially nonlocal nonlinear media[J]. J Opt B: Quantum Semiclass Opt, 2004, 6(5): s288-s294.

[6] [6] J Sanchez Curto, P Chamorro Posada, G S Mc Donald. Nonlinear interfaces: intrinsically nonparaxial regimes and effects[J]. J Opt A, 2009, 11(5): 054015.

[7] [7] N Akhmediev, A Ankiewicz, J M Soto Crespo. Does the nonlinear Schrodinger equation correctly describe beam propagation[J]. Opt Lett, 1993, 18(6): 411-413.

[8] [8] S Chi, Q Guo. Vector theory of self-focusing of an optical beam in Kerr media[J]. Opt Lett, 1995, 20(15): 1598-1600.

[9] [9] B Crosignani, P D Porto, A Yariv. Nonparaxial equation for linear and nonlinear optical propagation[J]. Opt Lett, 1997, 22(11): 778-780.

[10] [10] A Yariv, S Mookherjea. Nonparaxial spatial solitons and propagation-invariant pattern solutions in optical Kerr media[J]. Opt Lett, 2004, 29(11): 1254-1256.

[11] [11] A Ciattoni, B Crosignani, S Mookherjea, et al.. Nonparaxial dark solitons in optical Kerr media[J]. Opt Lett, 2005, 30(5): 516-518.

[12] [12] G Fibich. Small beam nonparaxiality arrests self-focussing of optical beams[J]. Phys Rev Lett, 1996, 76(23): 4356.

[13] [13] P Chamorro Posada, G S McDonald, G New. Exact soliton solutions of the nonlinear Helmholtz equation: communication[J]. J Opt Soc Am B, 2002, 19(5): 1216-1217.

[14] [14] P Chamorro Posada, G S McDonald. Helmholtz dark solitons[J]. Opt Lett, 2003, 28(10): 825-827.

[15] [15] J M Christian, G S McDonald, P Chamorro Posada. Helmholtz-Manakov solitons[J]. Phys Rev E, 2006, 74(6): 066612.

[16] [16] J M Christian, G S McDonald, P Chamorro Posada. Helmholtz bright and boundary solitons[J]. J Phys A, 2007, 40(7): 1545-1560.

[17] [17] J M Christian, G S McDonald, P Chamorro Posada. Bistable Helmholtz solitons in cubic-quintic materials[J]. Phys Rev A, 2007, 76(3): 033833.

[18] [18] J Sanchez Curto, P Chamorro Posada, G S McDonald. Dark solitons at nonlinear interfaces[J]. Opt Lett, 2010, 35(9): 1347-1349.

[19] [19] J Sánchez Curto, P Chamorro Posada, G S McDonald. Giant Goos-Hanchen shifts and radiation-induced trapping of Helmholtz solitons at nonlinear interfaces[J]. Opt Lett, 2011, 36(8): 3605-3607.

[20] [20] McCoy E A, Christian J M, G S McDonald. Nonparaxial refraction and giant Goos-Hanchen shifts at nonlinear optical interfaces[J]. Phys Rev A, 2012, 85(1): 013836.

[21] [21] Q Guo, B Luo, F Yi, et al.. Large phase shift of nonlocal optical spatial solitons[J]. Phys Rev E, 2004, 69(1): 016602.

[22] [22] W Krolikowski, O Bang. Solitons in nonlocal nonlinear media: exact solutions[J]. Phys Rev E, 2000, 63(1): 016610.

[23] [23] E W Laedke, K H Spatschek, L Stenflo. Evolution theorem for a class of perturbed envelope soliton solutions[J]. J Math Phys, 1983, 24(12): 2764-2769.

[24] [24] Mark J Ablowitz, Ziad H Musslimani. Spectral renormalization method for computing self-localized solutions to nonlinear systems[J]. Opt Lett, 2005, 30(16): 2140-2142.