A. Budiyanto, S. Hartanto, R. Widayanti, E. M. N. Setyawan, H. P. Wardono, and S. Gustari, “The relationship between G1 (c.260 G>A) and G4 (c.721 G>A) polymorphisms in the GDF9 gene and the litter size of sheep: A meta-analysis study”, J. Adv. Vet. Anim. Res, vol. 10, no. 4, pp. 599–607, Dec. 2023.