L2-Solutions of y" = q (t) y and a Functional Equation
L-A пары с рациональной зависимостью от спектральных параметров. Преобразование Дарбу
Linear differential transformations of the 2nd order as a representation of an abstract model
Linearizability of a polynomial system
Linearization Of Nonlinear Differential Equations: Third Order Nonlinear Ordinary Differential Equations Equivalent To Linear Second Order Equations
Linearization of second-order ordinary differential equations by generalized Sundman transformations.
Liouvillian first integrals of second order polynomial differential equations.