@article{Sun14:FMR,
    author = {Timothy Sun and Papoj Thamjaroenporn and Changxi Zheng},
    title  = {Fast Multipole Representation of Diffusion Curves and Points},
    journal = {ACM Transactions on Graphics (Proceedings of SIGGRAPH 2014)},
    year = {2014},
    volume = {33},
    number = {4},
    month  = Aug,
    url = {http://www.cs.columbia.edu/cg/fmr}
}