Luk, H. , Lai, Y. , Qin, L. , Chan, C. , Liu, Z. , Huang, Y. , Zheng, Y.. "Ultrasonic Evaluation of Bone Callus Growth in a Rabbit Tibial Distraction Model". World Academy of Science, Engineering and Technology, Open Science Index 57, International Journal of Animal and Veterinary Sciences (2011), 5(9), 516 - 523.