On deformations of standard R-matrices for integrable   infinite-dimensional systems
  Simple deformations, with a parameter $\epsilon$, of classical $R$-matrices which follow from decomposition of appropriate Lie algebras, are considered. As a result nonstandard Lax representations for some well known integrable systems are presented as well as new integrable evolution equations are constructed. 
Blazej M. Szablikowski, Maciej Blaszak