Αποχαιρετίζοντας τον Κώστα Τσίπη

 https://www.kathimerini.gr/opinion/561156532/apochairetizontas-ton-kosta-tsipi/

https://www.bostonglobe.com/2020/11/09/metro/kosta-tsipis-mit-physicist-prominent-voice-nuclear-disarmament-dies-86/

https://greekreporter.com/greek-mit-professor-and-antinuclear-war-activist-kostas-tsipis-passes-away/https://news.mit.edu/2009/3q-tsipis-0203