@article{XinLi:WLLXQ12TVCG,
 author = {Kexiang Wang and Xin Li and Bo Li and Huanhuan Xu and Hong Qin},
 title  = {Restricted Trivariate Polycube Splines for Volumetric Data Modeling},
 journal = {IEEE Transactions on Visualization and Computer Graphics},
 year = {2012},
 page = {703-716},
 volume = {18},
 number = {5},
}