1. The Recent Developments in Atomic Theory and the Quantum Postulate;Bohr,1928
2. The Quantum Postulate and the Recent Development of Atomic Theory1
3. Foundations of Quantum Theory and Complementarity;Rosenfeld;Nature,1961
4. New Foundation of Quantum Mechanics;Lande,1967
5. interview with A. Lande, Archive for the History of Quantum Physics, American Philosophical Society, hereafter AHQP. London's words are quoted in Lande, New Foundation