1. Per F. Dahl, “Kamerlingh Onnes and the discovery of superconductivity. The Leiden years, 1911–1914,” Historical Studies in the Physical Sciences 15 (1) (1984), 1-37; idem, Superconductivity: Its Historical Roots and Development from Mercury to the Ceramic Oxides (New York: American Institute of Physics, 1992), Chapters 3 and 4, pp. 50-79; Jacobus de Nobel and Peter Lindenfeld, “The Discovery of Superconductivity,” Physics Today 49 (September 1996), 40-42; Simón Reif-Acherman, “Heike Kamerlingh Onnes: Master of Experimental Technique and Quantitative Research,” Physics in Perspective 6 (2004), 197-223; on 212-216; Dirk van Delft, “Little cup of helium, big science,” Physics Today 61 (March 2008), 36-42; Dirk van Delft and Peter Kes, “The discovery of superconductivity,” Phys. Today 63 (September 2010), 38-43; Simón Reif-Acherman, “Liquefaction of gases and discovery of superconductivity: two very closely scientific achievements in low temperature physics,” Revista Brasileira de Ensino de Fisica 33, No. 2 (2011), 1-17; Dirk van Delft, “History and significance of the discovery of superconductivity by Kamerlingh Onnes in 1911,” Physica C 479 (2012), 30-35.
2. J. van den Handel, “Kamerlingh Onnes, Heike,” in Charles Coulston Gillispie, Editor In Chief, Dictionary of Scientific Biography. Vol. VII (New York: Charles Scribner’s Sons, 1973), pp. 220-222; Dirk van Delft, Freezing physics: Heike Kamerlingh Onnes and the quest for cold (Amsterdam: Koninklijke Nederlandse Akademie van Wetenschappen, 2007), passim; Reif-Acherman, “Heike Kamerlingh Onnes” (ref. 1), pp. 197-223; Ernst Cohen, “Kamerlingh Onnes Memorial Lecture,” Journal of the Chemical Society 1 (1927), 1193-1209; reprinted in Memorial Lectures delivered before The Chemical Society 1914–1932 [Vol. III] (London: The Chemical Society, 1933), pp. 91-107.
3. K. Gavroglu and Y. Goudaroulis, “The Remarkable Work of ‘Le Gentleman du Zero Absolu’,” in Kostas Gavroglu and Yorgos Goudaroulis, ed., Through Measurement to Knowledge: The Selected Papers of Heike Kamerlingh Onnes 1853–1926 (Dordrecht. Boston, London: Kluwer Academic Publishers, 1991), pp. xiii-xcvi, on p. xvii.
4. Quoted in Arno Laesecke, “Through Measurement to Knowledge: The Inaugural Lecture of Heike Kamerlingh Onnes (1882),” Journal of Research of the National Institute of Standards and Technology 107 (May-June 2002), 261-277, on 264.
5. H. Kamerlingh Onnes, “on the cryogenic laboratory at Leiden and on the production of very low temperatures,” Communications from the Physical Laboratory of the University of Leiden No. 14 (1894), 3-30, on 4; reprinted in Gravroglu and Goudaroulis, Through Measurement to Knowledge (ref. 3), pp. 3-30, on p. 4.