KLIMCZAK, Łukasz. The Gravity Model as a Tool for the Analysis of International Trade. Krakow Review of Economics and Management/Zeszyty Naukowe Uniwersytetu Ekonomicznego w Krakowie, Krakow, n. 5(941), p. 107–130, 2015. DOI: 10.15678/ZNUEK.2015.0941.0508. Disponível em: https://krem.uek.krakow.pl/index.php/krem/article/view/511.. Acesso em: 20 sep. 2024.