Klein, Ursula Independent Research Group: History and Philosophy of Laboratory Sciences, Max Planck Institute for the History of Science, Max Planck Society;
Klein, U. (2004). Review of: Knoeff, Rina: Hermann Boerhaave (1668-1738): Calvinist chemist and physician. Amsterdam: Koninklijke Nederlandse Akademie van Wetenschapen 2002. Gewina, 27(1), 44-46.