Soniya Akter Nishi, M. J. U. Sarder, M. H. Islam, S. M. Kamruzzaman, M. A. Islam, and R. Khaton, “Factors Affecting the Incidence of Repeat Breeding in Dairy Cows in Rajshahi district, Bangladesh”, Int. J. Livest. Res., vol. 8, no. 10, pp. 90–96, Oct. 2018.