Brinkley, Catherine, Benjamin Chrisinger, and Amy Hillier. 2013. “Tradition of Healthy Food Access in Low-Income Neighborhoods: Price and Variety of Curbside Produce Vending Compared to Conventional Retailers”. Journal of Agriculture, Food Systems, and Community Development 4 (1). Ithaca, NY, USA:155–169. https://doi.org/10.5304/jafscd.2013.041.011.