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Nexus: Is it contagious? : physical presence by Hook or Crook - origins of attributional nexus and its application to sales and use taxes - Part I of II
Harper, John B., (2008)
Mail order taxation in the post-Quill era
Cain, Rita M., (1995)
Supreme Court rules on constitutionality of state value added tax
Weindruch, Linda S., (1991)