
Source: "Presidential Address British Association for the Advancement of Science," 1890, p. 467 : On the theory of numbers
Source: Education as a Science, 1898, p. 153.
Source: "Presidential Address British Association for the Advancement of Science," 1890, p. 467 : On the theory of numbers
"David J. Gross - Biographical" http://www.nobelprize.org/nobel_prizes/physics/laureates/2004/gross-bio.html, Nobel Prize in Physics, nobelprize.org (2004)
Source: 1940s and later, Otto Neurath Economic Writings. Selections 1904-1945 (2004), p. 269
Robert Chambers, Chambers's Information for the People (1875) Vol. 2 https://books.google.com/books?id=vNpTAAAAYAAJ
Richard Courant in: The Australian Mathematics Teacher, Volumes 39-40 http://books.google.co.in/books?id=CofxAAAAMAAJ, Australian Association of Mathematics Teachers, 1983, p. 3
p, 125
"On the Harmony of Theory and Practice in Mechanics" (Jan. 3, 1856)
100 Years of Mathematics: a Personal Viewpoint (1981)
Henry Flynt " Is Mathematics a Scientific Discipline? http://www.henryflynt.org/studies_sci/mathsci.html," at henryflynt.org, 1996.
The Cosmos as a Poem (2010)
Source: Education as a Science, 1898, pp. 151-152.