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Sigma models in 2+1 dimensions (1994)
Book Chapter
Ward, R. (1994). Sigma models in 2+1 dimensions. In A. P. Fordy, & J. C. Wood (Eds.), Harmonic maps and integrable systems (193-202). F. Vieweg. https://doi.org/10.1007/978-3-663-14092-4_9

Finite-energy harmonic maps from R2 into simple manifolds such as CP1 ≅ S2 or SU(2)≅ S3 are thoroughly understood. The relevant equations constitute an integrable system, the general solution of which can be written down explicitly. Such solutions ma... Read More about Sigma models in 2+1 dimensions.

On the solutions of the anisotropic Heisenberg equation (1994)
Journal Article
Zakrzewski, W., Below, N., & Leznov, A. (1994). On the solutions of the anisotropic Heisenberg equation. Journal of Physics A: Mathematical and General, 27(16), 5607-5621. https://doi.org/10.1088/0305-4470/27/16/025

A method based on the discrete group of the inner symmetry of integrable systems is used to derive explicit formulae for soliton-like solutions of Heisenberg ferromagnets (with biaxial or uniaxial anisotropy). The solutions are given in terms of expr... Read More about On the solutions of the anisotropic Heisenberg equation.

Numerical twistor procedure for solving a non-linear field equation. (1994)
Journal Article
Moorhouse, T., & Ward, R. (1994). Numerical twistor procedure for solving a non-linear field equation. Journal of Mathematical Physics, 35(12), 6489-6497. https://doi.org/10.1063/1.530686

This paper concentrates on an integrable SU(2) chiral equation in two space and one time dimensions, admitting soliton solutions. It is, in effect, a reduction of the self‐dual Yang–Mills equations in 2+2 dimensions, and can therefore be solved by tw... Read More about Numerical twistor procedure for solving a non-linear field equation..

Chern-Simons solitons in a CP1 model (1994)
Journal Article
Piette, B., Tchrakian, D., & Zakrzewski, W. (1994). Chern-Simons solitons in a CP1 model. Physics Letters B, B(339), 95-100