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• The Motion of Surface with Constant Negative Gaussian Curvature

  Yishen Li

  1999-12-01

  38900 3460 Pages:85-96

• Symmetries in (1+1)-dimensional Integrable System with Their Algebraic Structures and Conserved Quantities

  Li Yishen, Cheng Yi

  2020-05-12

  39386 3006 Pages:17-30

• Comments on Some Algebraic Properties of the Gauge Equivalent Soliton Equations

  Li Yishen

  1989-02-01

  39712 2431 Pages:39-50