1. http://www.preservearticles.com/2012013022074/12-important-industrial-problems-faced-in-india.html
2. http://ideasmakemarket.com/2015/02/challenges-opportunities-development-india.html
3. http://www.business-standard.com/article/economy-policy/bihar-registers-highest-industrial-growth-among-bimaru-states-113100701048_1.html