I am sharing here some classic papers that cannot be easily found on the web.

Frechet classes and compatibility of distribution functions

A remark on the fundamental theorem in the theory of games

Geometric Problems in the Theory of Infinite-Dimensional Probability Distributions

Approximation of continuous functions by superpositions of plane waves

Approximation of a plane wave by superpositions of plane waves of given directions

Learning Internal Representations by Error Propagation

Kolmogorovâ€™s Mapping Neural Network Existence Theorem

An efficient algorithm for computing derivatives and extremal problems

On representation of functions by means of superpositions and related topics

Methode generale pour la resolution des systemes d'equations simultanees [English translation]

The Method of Steepest Descent for Non-Linear Minimization Problems

A method for the solution of certain nonlinear problems in least squares

On convergence proofs for perceptrons

On a class of perceptrons

Theoretical foundations of the potential function method in pattern recognition learning

Solution of Eigenvalue Problems with the LR-Transformation