1. Europe Dominated the Global Frozen Food Market in 2020https://iifiir.org/en/news/europe-dominated-the-global-frozen-food-market-in-2020
2. COVID-19 Effects on Refrigerated Transport Demandhttps://unitedworldtransportation.com/covid-19-effects-on-refrigerated-transport-demand/
3. Final Energy Consumption by Sector and Fuel in Europehttps://www.eea.europa.eu/data-and-maps/indicators/final-energy-consumption-by-sector-10/assessment
4. Greenhouse Gas Emissions from Transport in Europehttps://www.eea.europa.eu/data-and-maps/indicators/transport-emissions-of-greenhouse-gases/transport-emissions-of-greenhouse-gases-12
5. Improving the Energy Efficiency of Food Refrigeration Operations;James,2009