Michel, Noémi. 2015. Sheepology: The
Postcolonial politics of raceless racism in
Switzerland. Postcolonial Studies, 18:4, 410-426
Purtschert, Patricia; Falk, Francesca; Lüthi, Barbara. 2016. Switzerland and ‘colonialism without colonies’: Reflections on the status of colonial outsiders. Interventions, 18:2, 286-302
Purtschert, Patricia; Fisher-Tiné, Harald. 2015.
Colonial Switzerland: Rethinking Colonialism from the Margins. Basingstoke: Palgrave Macmillan.
I have found these are some good places from which to start:
Boulila, Stéphanie. 2019. Race and racial denial in Switzerland. Ethnic & Racial Studies. 42:9, 1401-1418 Bhambra, G. K., Gebrial, D., & Nişancıoğlu, K.
2018. Decolonising the University. Pluto Press.