Halcox, J., Halcox, J., Nour, K., Zalos, G., & Quyyumi, A. (2007). Endogenous Endothelin in Human Coronary Vascular Function: Differential Contribution of Endothelin Receptor Types A and B. Hypertension, 49(5), pp. 1134-1141. doi:10.1161/HYPERTENSIONAHA.106.083303

Halcox, Julian, J.P.J Halcox, K.R.A Nour, G. Zalos, and A.A Quyyumi. "Endogenous Endothelin in Human Coronary Vascular Function: Differential Contribution of Endothelin Receptor Types A and B." Hypertension 49, no. 5 (2007): 1134-1141.

Halcox, Julian, et al. "Endogenous Endothelin in Human Coronary Vascular Function: Differential Contribution of Endothelin Receptor Types A and B." Hypertension 49.5 (2007): 1134-1141.