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Measures of early-type galaxies in more and less crowded environments. PJE Peebles & A Nusser Nature 465 , 565 - 569 (2010) doi:10.1038/nature09101.
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Measures of early-type galaxies in more and less crowded environments. PJE Peebles & A Nusser Nature465, 565-569 (2010) doi:10.1038/nature09101