Here is an upcoming Dave Kopel article for the Albany Law Review. He is discussing jurisprudence of 5 state supreme court decisions (NM, WI, OH, MI, RI) supporting the right to legally carry arms for self defense purposes.
http://www.davekopel.org/2A/LawRev/The-Licensing-of-Concealed-Handguns-for-Lawful-Protection.pdf
http://www.davekopel.org/2A/LawRev/The-Licensing-of-Concealed-Handguns-for-Lawful-Protection.pdf