14 citations · 15 across the 7 of their papers we have counts for
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hep-th1994
Negative Flows of the KP-Hierarchy
G. Haak
We construct a Grassmannian-like formulation for the potential KP-hierarchy including additional ``negative'' flows. Our approach will generalize the notion of a tau-function to in…
hep-th1992
Group Theoretical Symmetries and Generalized Baecklund Transformations for Integrable Systems
G. Haak
We present a notion of symmetry for 1+1-dimensional integrable systems which is consistent with their group theoretic description and reproduces in special cases the known Baecklun…