1. European Environment Agency, Greenhouse gas emissions from transport in Europe, Indicator Assessment. https://www.eea.europa.eu/data-and-maps/indicators/transport-emissions-of-greenhouse-gases/transport-emissions-of-greenhouse-gases-12. Accessed 20 March 2020
2. European Commission, White paper roadmap to a single European transport area towards a competitive and resource efficient transport system. https://ec.europa.eu/transport/themes/strategies/2011_white_paper_en. Accessed 20 March 2020
3. Scaburi, A., Ferreira, J.C., Steiner, M.T.A.: Sustainable logistics: a case study of vehicle routing with environmental considerations. In: International Business, Trade and Institutional Sustainability, pp. 765–779. Springer (2020)
4. Demir, E., Huckle, K., Syntetos, A., Lahy, A., Wilson, M.: Vehicle routing problem: past and future. In: Wells, P. (ed.) Contemporary Operations and Logistics. Palgrave Macmillan, Cham (2019)
5. Toth, P., Vigo, D.: Vehicle Routing: Problems, Methods, and Applications. SIAM, Philadelphia (2014)