1. Ahmad A. N.B Scott J.N. and Bradley D.A. (1995). "Task decomposition in support of automation and robotics in construction." Automation and Robotics in Construction IMBiGS 407- 414.
2. Aristizabal R.J. (2012). "Estimating the parameters of the three-parameter lognormal distribution." Florida International University.
3. A spherical representation of a human body for visualizing movement
4. Bai Y. Huan J. and Peddi A. (2008). "Development of human poses for the determination of on-site construction productivity in real-time." The National Science Foundation Division of Civil Mechanical and Manufacturing Innovation Award Number: 0741374.