@article{Wang12TVCG,
 author = {K. Wang and X. Li and B. Li and H. Xu and H. Qin},
 title  = {Restricted Trivariate Polycube Splines for Volumetric Data Modeling},
 journal = {IEEE Trans. on Visualization and Computer Graphics},
 volume = 18,
 number = 5,
 pages = {703-716},
 year = {2012},
}