1. Becker-Weinberg, V., 2014. Maritime safety and security in the Gulf of Guinea. https://idi.mne.pt/images/docs/conferencias/guine/007.pdf (accessed 14.12.17)
2. Ship emissions of SO2 and NO2: DOAS measurements from airborne platforms;Berg;Atmos. Meas. Tech.,2012
3. Effects of ship emissions on sulphur cycling and radiative climate forcing over the ocean;Capaldo;Nature,1999
4. Emissions from ships;Corbett;Science,1997
5. Corbett, J.J., Fischbeck, P.S., 2001. Challenges in regulating ship emissions. In: Improving Regulation: Cases in Environment, Health, and Safety, p. 282.