@article{Mar11,
    title = {Example-Based Elastic Materials},
    author = {Sebastian Martin and Bernhard Thomaszewski and Eitan Grinspun and Markus Gross},
    journal = {ACM Trans. on Graphics (Proc. SIGGRAPH)},
    pages = {72:1-72:8}
    number = {4},
    volume = {30},
    year = {2011}
}