Joseph Schumpeter, Capitalism, Socialism and Democracy, 3rd ed. (New York: Harper & Row, 1950).
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Clayton M. Christensen, The Innovator’s Dilemma: When New Technologies Cause Great Firms to Fail (Cambridge, MA: Harvard Business School Press, 1997); Clayton M. Christensen and Michael E. Raynor, The Innovator’s Solution: Creating and Sustaining Successful Growth (Cambridge, MA: Harvard Business School Press, 1997).