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社会選択理論 - Wikipedia
http://ja.wikipedia.org/wiki/%E7%A4%BE%E4%BC%9A%E9%81%B8%E6%8A%9E%E7%90%86%E8%AB%96
SOCIAL CHOICE THEORY
http://plaza.umin.ac.jp/~kodama/ethics/wordbook/social_choice_theory.html
ケネス・アロー - Wikipedia
http://ja.wikipedia.org/wiki/%E3%82%B1%E3%83%8D%E3%82%B9%E3%83%BB%E3%82%A2%E3%83%AD%E3%83%BC
