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. 2020 Oct 15;12(10):2369. doi: 10.3390/polym12102369

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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The $ε_{c c}^{’}$ and( $f_{l}^{’} / f_{c}$ ) relationships of the constitutive model and experimental consequences.