McAlister, K., K. Fisher, K. Wilson, and R. Marttinen. “Correlation and Wear-Time Compliance of the Wrist-Worn SQORD Activity Monitor Compared to the Actigraph 3TGX in Measuring Free-Living Physical Activity in Low SES Elementary Youth”. Californian Journal of Health Promotion, Vol. 17, no. 2, Dec. 2019, pp. 28-40, doi:10.32398/cjhp.v17i2.2287.