“Medroxyprogesterone Acetate in Homemade Intravaginal Devices for Estrus Synchronization in Hair Ewes: Evaluation of Efficacy, Adverse Effects and Comparison With a Commercial Device in Costa Rican Herds”. Ciencias Veterinarias, vol. 35, no. 2, Dec. 2017, pp. 85-102, https://doi.org/10.15359/rcv.35-2.3.