Fan, ShaohuaChenney, StephenHu, BoTsui, Kam-WahLai, Yu-chi2015-02-212015-02-2120061467-8659https://doi.org/10.1111/j.1467-8659.2006.00954.xOptimizing Control Variate Estimators for Rendering10.1111/j.1467-8659.2006.00954.x351-357