Freedman et al., Journal of Nutrition Education and Behavior, May 2017; DOI 10.1016/j.jneb.2017.01.007.  
This study finds that implementing a multi-component farmers market approach - establishing markets in low-income neighborhoods, accepting SNAP benefits, and availability of a healthy food incentive program - can increase farmers market use among SNAP populations. Healthy food incentive programs were found to further the reach of farmers markets among SNAP recipients. Even when SNAP is accepted and incentives are offered, efforts are still needed to address barriers to first-time and repeat use of farmers markets among low-income populations, such as lack of awareness about the acceptance of SNAP and transportation barriers.