López, C., C. E. Giraldo, and J. U. Carmona. “Evaluation of a Double Centrifugation Tube Method for Concentrating Bovine Platelets: Cellular Study”. Archivos De Medicina Veterinaria, vol. 44, no. 2, Aug. 2012, pp. 109-15, doi:10.4067/S0301-732X2012000200003.