Bregantini D. Moment-based estimation of stochastic volatility. J Bank Financ. 2013 Dec 1;37(12):4755-64. doi: 10.1016/j.jbankfin.2013.08.008
Boulanger L, Wu N, Chen SY, Nagar S, Fraser K, Bernauer MJ, Zhao Z, Zhao Y. Predictors of pain medication selection among patients diagnosed with fibromyalgia. Pain Pract. 2012 Apr;12(4):266-75.