US Dept. of Commerce, Bureau of the Census, Business Dynamics Statistics, .

Timothy Dunne, Mark J. Roberts, and Larry Samuelson, “Patterns of Firm Entry and Exit in U. S. Manufacturing Industries,” Rand Journal of Economics 19, no 4 (Winter 1988): 233–271; Daniel Kahneman, Thinking, Fast and Slow (New York: Farrar, Straus, and Giroux, 2011), 256.