WASET
Gaja, A. , Al-Dahash, S. , Raju, G. , Kubota, C.. "Ultrasonic Assessment of Corpora Lutea and Plasma Progesterone Levels in Early Pregnant and Non Pregnant Cows". World Academy of Science, Engineering and Technology, Open Science Index 84, International Journal of Animal and Veterinary Sciences, (2013), 7(12), 1154 - 1156.