Schaffel-Bremenkamp, E., & Rys K. (2016).  Assessing the linguistic vitality and registering the grammar of Zeeuws in Brazil. Presented at the workshop Linguistic Variation in South America, Leiden University Centre for Linguistics, Leiden, The Netherlands.
Schaffel-Bremenkamp, E., Rys K., & Postma G. (2015).  Brazilian Zeeuws: A Sociolinguistic Study on the Influence of Bilingualism in the Process of Language Death. Presented at the 1st Bilingualism in the Hispanic and Lusophone World conference (BHL 2015), Leiden, The Netherlands.