Khair A, Asaduzzaman M, Sultana Z, Talukder A, Das Z, Alam M, Shamsuddin M. Economic benefit in repeat breeder cows using intrauterine infusion of penicillin and estrus synchronization followed by timed artificial insemination. J. Adv. Vet. Anim. Res [Internet]. 2018 Dec. 29 [cited 2024 Aug. 16];5(4):454-8. Available from: https://banglajol.info/index.php/JAVAR/article/view/39511