On the redundant zeros in the theory of the heisenberg matrix

Further Remarks on the Redundant Zeros in Heisenberg's Theory of Characteristic Matrix

Redundant Zeros in the Discrete Energy Spectra in Heisenberg's Theory of Characteristic Matrix

Remarks on Dr. Ma's "Redundant Zeros in the Discrete Energy Spectra in Heisenberg's Theory of Characteristic Matrix"

The equality of Schrödinger’s Theory and Heisenberg’s S-matrix Theory

On the uniqueness of the Heisenberg commutation relations

On some mathematical aspects of the Heisenberg relation