@TechReport{economics.dp.2012-23,
 author = {He, Junnan},
 title = {A Generalized Unification Theorem for Choice Theoretic Foundations: Avoiding the Necessity of Pairs and Triplets},
 type = {Economics Discussion Paper},
 institution = {Kiel Institute for the World Economy},
 year = {2012},
 number = {2012-23},
 url = {http://www.economics-ejournal.org/economics/discussionpapers/2012-23}
}