@article{Walter07Microfacet,
  author    = {Bruce Walter and Stephen R. Marschner and Hongsong Li and Kenneth E. Torrance},
  title     = {Microfacet Models for Refraction through Rough Surfaces},
  booktitle = {Rendering Techniques (Proceedings EG Symposium on Rendering)},
  year      = {2007}
}

@article{Zhao11Building,
	author = {Shuang Zhao and Wenzel Jakob and Steve Marschner and Kavita Bala},
	Title = {Building Volumetric Appearance Models of Fabric using Micro CT Imaging},
  	journal = {ACM Transactions on Graphics (Proceedings SIGGRAPH 2011)},
  	year = {2011},
	month = {July}
}