Hydrogen’s Challenge to Dirac Theory:

The Hydrogen Atom and Dirac’s Theory of the Electron

Trajectory of a Dirac electron in the hydrogen

THE HYDROGEN ATOM IN THE DIRAC--HESTENES THEORY.

Remarks concerning the hydrogen eigenfunctions in Dirac's theory

THE DIRAC-PAULI CALCULATIONS FOR HYDROGEN; OPERATOR THEORIES; SCHRÖDINGER's THEORY

The energy eigenvalues of the Dirac hydrogen atom