How to reproduce a figure or other already published material?

You can use figures and any other material from published articles according to the below terms of Frontiers Copyright Policy.

Under the Frontiers Terms and Conditions, authors retain the copyright to their work. All Frontiers articles are Open Access and currently distributed under the terms of the Creative Commons Attribution License, which permits the use, distribution and reproduction of material from published articles, provided the original authors and source are credited, and subject to any copyright notices concerning any third-party content. For earlier articles, please check the online page for license details.