1. Alizadeh, A.H., Kavussanos, M.G., Menachof, D.A.: Hedging against bunker price fluctuations using petroleum futures contracts: constant versus time-varying hedge ratios. Appl. Econ. 36(12), 1337–1353 (2004)
2. Andersson, H., Fagerholt, K., Hobbesland, K.: Integrated maritime fleet deployment and speed optimization: case study from RoRo shipping. Comput. Oper. Res. 55, 233–240 (2015)
3. Cames, M., Graichen, J., Siemons, A., Cook, V.: Emission reduction targets for international aviation and shipping (2015). http://www.europarl.europa.eu/thinktank/en/document.html?reference=IPOL_STU(2015)569964 . Accessed 25 June 2016
4. Cariou, P.: Is slow steaming a sustainable means of reducing co2 emissions from container shipping? Transp. Res. D 16(3), 260–264 (2011)
5. Clarkson: Clarkson Research Services website (2015). https://sin.clarksons.net/ . Accessed 11 Jan 2016