https://www.eda.admin.ch/dam/eda/en/documents/publications/EuropaeischeAngelegenheiten/Schweiz-und-EU_en.pdf
https://static.europeanchamber.com.cn/upload/documents/documents/Business_Confidence_Survey_2019_updated[663].pdf
https://theconversation.com/migracion-expulsion-y-desplazamiento-asi-ha-sido-la-diaspora-palestina-215941