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. 2019 Jun 27;7:466. doi: 10.3389/fchem.2019.00466

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Copyright © 2019 Wegner, Dussert, Truffier-Boutry, Benayad, Beal, Mattera, Ling, Carrière and Reiss.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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XPS spectra of In 3d for (A) the gradient shell sample and (B) the aluminum treated sample at 0 and 6 h of aging. (C) XPS spectra of Al 2p for the aluminum treated sample.