YessaE. Y.; TumbelakaL. I. T. A.; WientarsihI.; UlumM. F.; PurwantaraB.; Amrozi. In Vitro, In Compost, and In Vivo Assessment of Chitosan-Polyethylene Glycol As an Intravaginal Insert for Progesterone Delivery in Sheep. Trop. Anim. Sci. J. 2023, 46, 295-305.