1. Pattern Formation in Liquid Crystals;Buka,1995
2. Solitons and Particles;Rebbi,1984
3. S.E. Trullinger, V.E. Zakharov, V.L. Pokrovsky, Solitons, Vol. 17, North-Holland, Amsterdam, 1986.
4. Theorie der Domänenwände in Geordneten Medien;Hubert,1974
5. Magnetic Domain Walls in Bubble Materials;Malozemoff,1979