Eisenmann, Thomas, Eric Ries, and Sarah Dillard. "Hypothesis-Driven Entrepreneurship: The Lean Startup." Harvard Business School Background Note 812-095, December 2011. (Revised July 2013.) ...

Cespedes, Frank V., Thomas Eisenmann, and Steven G. Blank. "Customer Discovery and Validation for Entrepreneurs." Harvard Business School Background Note 812-097, November 2011. (Revised August 2012.) ...

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