Jacquesson, François and van Breugel, Seino (2017). "The linguistic reconstruction of the past: The case of the Boro-Garo languages." In Linguistics of the Tibeto-Burman Area, 40, 90-122.doi:10.1075/ltba.40.1.04van [Note: English translation of the French original: Jacquesson, François (2006). ‘La reconstruction linguistique du passé: Le cas des language Boro-Garo’. Bulletin de la Société de Linguistique de Paris 101(1): 273–303.]
"Briefly, I propose, following a suggestion by Burling (2007), that the Proto-Boro-Garo first as a lingua franca used for communication across the various linguistic communicates of the region and its striking simplicity and transparency reflect a period when it was widely spoken by communities for whom it was not a native language." (DeLancey 2012:3) DeLancey, Scott (2012). Hyslop, Gwendolyn; Morey, Stephen; w. Post, Mark (eds.). "On the Origin of Bodo-Garo". Northeast Indian Linguistics. 4: 3–20. doi:10.1017/UPO9789382264521.003. ISBN9789382264521.