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Gravitational lens fractions among candidate high-redshift HUDF galaxies. JSB Wyithe et al. Nature 469 , 181-184 (2011) doi:10.1038/nature09619.
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Gravitational lens fractions among candidate high-redshift HUDF galaxies. JSB Wyithe et al.Nature469, 181-184 (2011) doi:10.1038/nature09619