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 ON DIFFERENTIAL EQUATIONS DESCRIBING SURFACESOF CONSTANT CURVATURE, INTEGRABILITYAND SOLITONS  |
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ON DIFFERENTIAL GEOMETRY OF SURFACES
AND INTEGRABILITY OF EVALUTIONARY
PARTIAL DIFFERENTIAL EQUATIONS
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Pseudospherical Surfaces and Evolution Equation in Higher Dimensions |
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Pseudospherical Planes and Evolution Equations in Higher Dimensions II |
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Pseudospherical 3-Planes In R5 and Evolution Equations |
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Describing Pseudospherical Planes and Other Properties of Evolutionary Soliton Equations |