Modina, S., V. Borromeo, A. Luciano, V. Lodde, F. Franciosi, and C. Secchi. “Relationship Between Growth Hormone Concentrations in Bovine Oocytes and Follicular Fluid and Oocyte Developmental Competence”. European Journal of Histochemistry, vol. 51, no. 3, Aug. 2009, pp. 173-80, doi:10.4081/1139.