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Lichten W, Simon EW.Lichten W, et al.Intellect Dev Disabil. 2008 Oct;46(5):387-9. doi: 10.1352/2008.46:387-389.Intellect Dev Disabil. 2008.PMID: 19090640No abstract available.
Lichten W, Simon EW.Lichten W, et al.Intellect Dev Disabil. 2007 Oct;45(5):335-46. doi: 10.1352/0047-6765(2007)45[335:DMRAMO]2.0.CO;2.Intellect Dev Disabil. 2007.PMID: 17887910
Zhao P, Lichten W, Zhou ZX, Layer HP, Bergquist JC.Zhao P, et al. Among authors: lichten w.Phys Rev A Gen Phys. 1989 Mar 15;39(6):2888-2898. doi: 10.1103/physreva.39.2888.Phys Rev A Gen Phys. 1989.PMID: 9901580No abstract available.