"The philosophy of Niels Bohr" by Aage Petersen in "Bulletin of the Atomic Scientists", Volume 19, No. 7 (September 1963), as quoted in Abraham Pais "The Genius of Science: A Portrait Gallery" (p. 24), 2000, and in Paul McEvoy "Niels Bohr: Reflections on Subject and Object" (p. 291), October 2000.
John Keats (2015). “John Keats - The Man Behind The Lyrics: Life, letters, and literary remains: Complete Letters and Two Extensive Biographies of one of the most beloved English Romantic poets”, p.225, e-artnow