the perturbation bundle
Fuchssteiner, Benno
In: Applications of analytic and geometric methods to nonlinear differential equations : [proceedings of the NATO Advanced Research Workshop on Applications of Analytic and Geometric Methods to Nonlinear Differential Equations, Exeter, U.K., July 14 - 19, 1992] (NATO ASI series : Series C, Computer and physical sciences : 413), Jg. 1993, S. 125-138