https://www.mckinsey.com/featured-insights/diversity-and-inclusion/five-fifty-the-color-of-wealth?cid=fivefifty-eml-alt-mkq-mck&hlkid=22632777838146f4a236ee00fa3ab2f1&hctky=2073353&hdpid=d18bd6c1-419e-4ecf-9f54-0bed589bb064#
https://www.wsi.de/download-proxy-for-faust/download-pdf?url=http%3A%2F%2F217.89.182.78%3A451%2Fabfrage_digi.fau%2Fp_wsi_report_63e_2021.pdf%3Fprj%3Dhbs-abfrage%26ab_dm%3D1%26ab_zeig%3D9200%26ab_diginr%3D8483
https://www.opendemocracy.net/can-europe-make-it/manuel-nunes-ramires-serrano-g-rald-sousa-mendes/save-jews-portugal-holocaust?utm_source=Daily+Newsletter&utm_campaign=5f79e9b376-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-5f79e9b376-407405485