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Liu YG, Choy WC, Sha WE, Chew WC.Liu YG, et al. Among authors: choy wc.Opt Lett. 2012 Jun 1;37(11):2112-4. doi: 10.1364/OL.37.002112.Opt Lett. 2012.PMID: 22660138
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Sha WE, Meng LL, Choy WC, Chew WC.Sha WE, et al. Among authors: choy wc.Opt Lett. 2014 Jan 1;39(1):158-61. doi: 10.1364/OL.39.000158.Opt Lett. 2014.PMID: 24365847
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