Yj. Zhu et Sy. Lou, EXACT SOLITARY WAVE SOLUTIONS OF THE COUPLED NONLINEAR SCALAR FIELD-EQUATIONS, Communications in Theoretical Physics, 30(1), 1998, pp. 147-152
Because of the arbitrary property of the singular manifold, the usual
singularity analysis can be extended to a different form. Using a nons
tandard truncation approach, five special types of exact solution of t
he coupled nonlinear scalar field equations are obtained.