Lax Representation of WZNW-Like Systems
  The Lax representation and Backlund transformations for the systems similar to WZNW (Wess-Zumino-Novicov-Witten) systems and non-abelian affine Toda models are obtained in present paper. One of these systems is a new integrable extension of well known sine-Gordon equation. 
A.V. Balandin, O.N. Pakhareva