The effects of three different levels of feeding on live weight of the ewes, birth weight, growth and mortality of their lambs during late pregnancy Ozturk, E.; Bas, S.; Aksoy, A.; Ozsoy, M.K.; Vanl, Y. Doga, Turk Veterinerlik ve Hayvanclk Dergisi 13(3): 352-371 1989 https://eurekamag.com/research/002/249/002249596.php