VENGRAUSKAS, Petras Vytautas; LANGVINIENĖ, Neringa. Methods of International Services Trade Statistical Recording. Ekonomika, [S. l.], v. 62, p. 109–119, 2003. DOI: 10.15388/Ekon.2003.17289. Disponível em: https://www.zurnalai.vu.lt/ekonomika/article/view/17289. Acesso em: 4 jul. 2025.