TL;DR: Szmrecsanyi, Benedikt, Jason Grafmiller, and Laura Rosseel as discussed by the authors studied the stability and fluidity in syntactic variation world wide: The genitive alternation across varieties of English.
Abstract: Biber, Douglas. 1988. Variation across speech and writing. Cambridge: Cambridge University Press. Heller, Benedikt. 2018. Stability and fluidity in syntactic variation world-wide: The genitive alternation across varieties of English. PhD dissertation, KU Leuven. Röthlisberger,Melanie. 2018. Regional variation in probabilistic grammars: Amultifactorial study of the English dative alternation. PhD dissertation, KU Leuven. Szmrecsanyi, Benedikt, Jason Grafmiller & Laura Rosseel. 2019. Variation-based distance and similarity modeling: A case study inWorld Englishes. Frontiers in Artificial Intelligence 2. DOI: 10.3389/frai.2019.00023