Useful links
For researchers
https://languageattrition.org/
https://migrant-integration.ec.europa.eu/library-document/multilingual-cities-wien_en
https://www.eldia-project.org/
For non-linguists
Heritage Language - Maria Polinsky
Three reasons to preserve (and develop) a heritage language: Charles Chang at TEDxRiceU 2014
Can You Find Your Identity Through A Heritage-Language? | Susan Poulin | TEDxPortsmouth
Creating bilingual minds | Naja Ferjan Ramirez | TEDxLjubljana
Both Not Half: How language shapes identity | Jassa Ahluwalia | TEDxChandigarh Olga Kagan, Intercultural Competence of Heritage Language Learners Dr. Yeşim Sevinç - Let’s talk about Heritage Language Anxiety!