"Quanta (Théorie des)" . . . . "Quantentheorie." . . "Théorie quantique." . . "Quantum theory." . . "quantum theory." . . . . . . . . . . . . . . . . . . . . . . . . "The physical significance of the quantum theory" . "The physical significance of the quantum theory"@en . "The Physical Significance of the Quantum Theory"@en . "The Physical Significance of the Quantum Theory" . "The Physical significance of the Quantum theory by F. A. Lindemann" . .