Links
[1] https://www.dmlp.org/resources/related-resources-choosing-and-checking-availability-business-name
[2] https://www.dmlp.org/legal-guide/choosing-and-checking-availability-business-name
[3] https://www.dmlp.org/legal-guide/trademark-law-and-naming-your-business
[4] http://smallbusiness.findlaw.com/starting-business/starting-business-name/starting-business-name-choosing.htmlnPicking
[5] http://www.uspto.gov/trademarks/index.jsp
[6] http://smallbusiness.findlaw.com/starting-business/starting-business-name/starting-business-name-checking.html
[7] http://www.icann.org/registrars/accredited-list.html