Gradoville, Michael S., Earl K. Brown, and Richard J. File-Muriel. 2016. “The Effect of Varying Intercepts on Findings in Sociophonetic Data: Some Observations from Caleño Spanish”. Journal of Research Design and Statistics in Linguistics and Communication Science 2 (2): 105-30. https://doi.org/10.1558/jrds.v2i2.27203.