The Effect of Tree Cover and Vegetation on Incidence of Childhood Asthma in Metropolitan Statistical Areas of Texasv. 22No. 5American Society for Horticultural Science631–637
Pilat, Monica Ann, McFarland, Amy, Snelgrove, Amy, Collins, Kevin, Waliczek, Tina Marie, and Zajicek, Jayne M. 2012. "The Effect of Tree Cover and Vegetation on Incidence of Childhood Asthma in Metropolitan Statistical Areas of Texas." Horttechnology, 22, (5) 631–637.