@TechReport{CEPII:2003-02,
  author={Pierre-Philippe Combes and Miren Lafourcade and Thierry Mayer},
  title={Can Business and Social Networks Explain the Border Effect Puzzle?},
  year=2003,
  month=January,
  institution={CEPII},
  type={Working Papers},
  url={https://www.cepii.fr/CEPII/fr/publications/wp/abstract.asp?NoDoc=162},
  number={2003-02},
  
      abstract={},
      keywords={Border effects ; Gravity model ; Simulation ; International trade ; International integration}
  
}