[1928, April 14, Introduction to Niels Bohr's The quantum postulate and recent developments of quantum theory, Nature, Suppl. No. 3050, 6, 52] As quoted by K. V. Laurikainen, The Origin and Development of the Idea of Complementarity, 1980.
Herbert Stanley Allen FRSE FRS was an English physicist noted as a pioneer in early X-ray research, working under J. J. Thomson at the University of London and alongside Nobel laureate Charles Glover Barkla at the University of Edinburgh. A supporter of the Parson magneton, Allen was also an early contributor to the field of quantum mechanics. Wikipedia
[1928, April 14, Introduction to Niels Bohr's The quantum postulate and recent developments of quantum theory, Nature, Suppl. No. 3050, 6, 52] As quoted by K. V. Laurikainen, The Origin and Development of the Idea of Complementarity, 1980.