Web Reference
4 steps to customer development :
http://neverstop.co/start-launching/the-four-steps-to-customer-discovery/
Customer Development Model:
https://www.marsdd.com/mars-library/developing-your-value-proposition-an-overview-of-customer-discovery/
4 Steps to Epiphany :
https://www.cleverism.com/how-customer-development-model-work/
Steve Blanks :
https://steveblank.com/category/customer-development/
Principles of Lean Startup :
http://theleanstartup.com/principles
26 articles to read about customer discovery
http://startupmanagement.org/lexicon/customer-discovery-and-validation/
Customer discovery method :
http://publications.lib.chalmers.se/records/fulltext/176144/176144.pdf
Steve Blank Essays on Customer Development :
https://steveblank.com/tag/customer-discovery/
The Mom test :
http://www.startupwerkboek.nl/startupcenter/Momtest.pdf
How to develop customers like your product:
http://venturehacks.com/articles/customer-development
Importance of Customer Development:
http://www.huffingtonpost.com/michael-b-fishbein/what-is-customer-developm_b_4259917.html