1. Eurostat, China-EU - international trade in goods statistics (2018), Available from: https://ec.europa.eu/eurostat/statistics-explained/index.php?title=China-EU_-_international_trade_in_goods_statistics#Manufactured_goods_dominate_trade_with_China [Accessed on 17.05.2018]
2. Kalwasinski M., Eksport z Polski do Chin najwyższy w historii, Bankier.pl. Available from: https://www.bankier.pl/wiadomosc/Eksport-z-Polski-do-Chin-najwyzszy-w-historii-7568470.html [Accessed on 14.06.2018]
3. Statistics Poland, Transport activity results in 2016 (2017), Available from: https://stat.gov.pl/en/topics/transport-and-communications/transport/transport-activity-results-in-2016,6,12.html. [Accessed on 16.06.2018]
4. Kolejowy R. (2018), Available from: https://www.rynek-kolejowy.pl/wiadomosci/nowy-jedwabny-szlak-infrastruktura-nie-nadaza-za-przewozami-87005.html [Accessed on 17.05.2018]
5. Palacio A., Adenso-Díaz B., Lozano S., A fuzzy approach to the location of depots for returned maritime containers, 7th IFAC Conference on Manufacturing Modelling, Management and Control International Federation of Automatic Control, Saint Petersburg, Russia (2013)