1. Current data - San Pedro bay ports clean air action plan.
https://monitoring.cleanairactionplan.org/current-data/
. Accessed 24 Jan 2020
2. dashPORT.
https://www.offis.de/en/offis/project/dashport.html
. Accessed 15 Jan 2020
3. Environmental report 2018: Ports of Bremen/Bremerhaven.
https://bremenports.de/greenports/wp-content/uploads/sites/3/2017/04/PERS-Rezertifizierung_Report_2018_en.pdf
. Accessed 15 Jan 2020
4. News 4.19.
https://www.cml.fraunhofer.de/content/dam/cml/de/documents/Newsletter/Newsletter
. Accessed 15 Jan 2020
5. Emissions estimation methodology for ocean-going vessels (2008).
https://ww3.arb.ca.gov/regact/2008/fuelogv08/appdfuel.pdf
. Accessed 23 Jan 2020