1. K. J.Laidler, The World of Physical Chemistry, Oxford University Press, Oxford, 1993. The brief discussion presented in the next three paragraphs is strongly based on that given by Laidler on pages 238–242 of his fascinating book
2. The development of the Arrhenius equation
3. J. H.Van t'Hoff, Etudes de Dynamique Chimique, F. Muller and Co., Amsterdam, 1884; see also the revision and enlargement by E. Cohen, translated into English by T. Ewan (Williams and Norgate, London, 1896)
4. Über die Reaktionsgeschwindigkeit bei der Inversion von Rohrzucker durch Säuren
5. Über die Zersetzung des gasförmigen Phosphorwasserstoffs