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. 2019 Jun 11;20(1):608–621. doi: 10.1080/14686996.2019.1618685

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© 2019 The Author(s). Published by National Institute for Materials Science in partnership with Taylor & Francis Group.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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ν = c \cdot (\frac{3}{2} \cdot P (X_{3}) + 2 \cdot P (X_{4}))

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