@article{Jakob14Discrete,
author = {Wenzel Jakob and Miloš Hašan and Ling-Qi Yan and Jason Lawrence and Ravi Ramamoorthi and Steve Marschner},
title = {Discrete Stochastic Microfacet Models},
journal = {ACM Transactions on Graphics (Proceedings of SIGGRAPH 2014)},
year = {2014},
volume = {33},
number = {4}
}