Constructing towers with skeletons from open Lie algebras and   integrability
  We provide a given algebraic structure with the structure of an infinitesimal algebraic skeleton. The necessary conditions for integrability of the absolute parallelism of a tower with such a skeleton are dispersive nonlinear models and related conservation laws given in the form of associated linear spectral problems. 
Marcella Palese, Ekkehart Winterroth
math-ph math.MP