1. Shipping and Ports in Brazil
https://www.iflr.com/Article/3216860/Shipping-and-ports-in-Brazil.html?ArticleId=3216860
2. Quality of Port Infrastructure, WEF (1 = Extremely Underdeveloped to 7 = Well Developed and Efficient by International Standards)
https://data.worldbank.org/indicator/IQ.WEF.PORT.XQ
3. Maersk in Brazil
https://www.maersk.com/-/media/ml/about/sustainability/publications/09-brazil-study.pdf
4. Time-Related Key Performance Indicators and Port Performance: A Review of Theory and Practice;Sarwar,2013