@article{Haase13:AAO,<br>  title = {Automated Approximation of Center of Mass Position in X-ray Sequences of Animal Locomotion},<br>  journal = {Journal of Biomechanics},<br>  author = {Daniel Haase and Emanuel Andrada and John A. Nyakatura and Brandon M. Kilbourne and Joachim Denzler},<br>  year = {2013},<br>  pages = {2082-2086},<br>}<br>