1. Cited in “OED” (1971): Vol II, p 2158.
2. (1938): “It's Perfectly True and Other Stories,” translated from the Danish by New York: Harcourt, Brace and Company, pp 108–112 (originally published in 1835).
3. (1910): Phosphorus poisoning in the match industry in the United States. “Bureau of Labor Bulletin No. 86”. Washington, DC: The Bureau, pp 31–146.