Fafulas, S. (2021). Variation of the simple present and present progressive: Peruvian Spanish, ‘Pear Story,’ and language contact, oh my! In M. Díaz-Campos, M. (Ed.), The Handbook of Variationist Approaches to Spanish (pp. 328–344). Routledge.
New research progressive variation & Amazonian Spanish in “Routledge Handbook of Variationist Approaches to Spanish”