“Facebook Newsroom”, http://newsroom.fb.com/content/default.aspx?newsAreaId=21 (по состоянию на 23 июля 2013 г.).
204
Dale Jorgenson and Barbara Fraumeni, “The Accumulation of Human and Nonhuman Capital, 1948–84”, в книге The Measurement of Saving, Investment, and Wealth (Chicago, IL: University of Chicago Press for National Bureau of Economic Research, 1989), стр. 230, http://www.nber.org/chapters/c8121.pdf.
