On Negative Order KdV Equations
On non-Abelian Toda $A_2^{(1)}$ model and related hierarchies
On Non-Commutative Integrable Burgers Equations
On Non-Point Invertible Transformations of Difference and Differential-Difference Equations
On non-QRT Mappings of the Plane
On nonlocal symmetries for the Krichever--Novikov equation
On nonlocal symmetries, nonlocal conservation laws and nonlocal transformations of evolution equations
On one integrable system with a cubic first integral
On one of methods for finding exact solutions of nonlinear differential equations
On one-parametric families of Backlund transformations
On pattern structures of the N-soliton solution of the discrete KP equation over a finite field
On Properties of Hamiltonian Structures for a Class of Evolutionary PDEs
On Psi-function for finite-gap potentials
On pulse broadening for optical solitons
On quantization of the KdV equation
On quantum L-operator for two-dimensional lattice Toda model
On Quasitriviality and Integrability of a Class of Scalar Evolutionary PDEs
On rational solutions of multicomponent and matrix KP hierarchies
On reciprocal equivalence of Stäckel systems
On recursion operators and nonlocal symmetries of evolution equations