1. Zur Elektronentheorie der Metalle;Sommerfeld;Naturwiss,1927
2. Über die Quantenmechanik der Elektronen in Kristallgittern;Bloch;Z. Phys.,1928
3. Further Experiments with Liquid Helium. D. On the Change of the Electrical Resistance of Pure Metals at very low temperatures. … V. The Disappearance of the Resistance of Mercury, Koninklijke Nederlandse Akademie van Wetenschappen Amsterdam;Kamerlingh Onnes;Proceedings of the Section of Sciences,1911
4. Note on the Theory of the Metallic State;Lindemann;Phil. Mag.,1915
5. Superconductivity: Its Historical Roots and Development from Mercury to the Ceramic Oxides;Dahl,1992