chang et al. 2015, chiang et al. 2015, chiang et al. 2015 chapter 22, cheng et al. 2015, chung et al. 2015, chang et al. 2014, chang et al. 2016, chang et al. 2013, chang et al. 2012, chang et al. 2012 research article
chang et al. 2015. There are any references about chang et al. 2015 in here. you can look below.
chang et al. 2015
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chiang et al. 2015 chapter 22
cheng et al. 2015
chung et al. 2015
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chang et al. 2016
chang et al. 2013
chang et al. 2012
chang et al. 2012 research article
chang et al. 2015, chiang et al. 2015, chiang et al. 2015 chapter 22, cheng et al. 2015, chung et al. 2015, chang et al. 2014, chang et al. 2016, chang et al. 2013, chang et al. 2012, chang et al. 2012 research article
