@article{SahaTMI04,
 author    = "P. K. Saha and J. K. Udupa and A. X. Falc{\~{a}}o and B. E. Hirsch and S. Siegler", 
 title     = "Iso-shaping rigid bodies for estimating their motion from image sequences",
 journal   = "IEEE Trans. on Medical Imaging",
 volume    = "23",
 number    = "1",
 pages     = "63--72",
 month     = "Jan",
 year      = 2004
}