Ferer, Edmy, et al. “Fluorescence Response of CdS Nanoparticles to Serum of Cardiac Patients: Towards the Development of a Real Time Sensor for Heart Failure Detection”. Puerto Rico Health Sciences Journal, vol. 28, no. 3, Aug. 2009, https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/152.