最近投稿scientific reports， 审核后要求提供文中两个地图类的图片的copyright。
我这两个图片是引用自论文合作者的其他文章中的图片，也列了参考文献，这种为什么也要copyright呢？
这种东西一般怎么获得啊？

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--Please can you clarify how the maps in Figures 2, 4A1, and 4A2 were generated? Please cite the software used to create the maps in the figure legend (including version number and URL link) if you or one of your co-authors created it.

Alternatively, please cite the source the maps have been modified from in your figure legend and provide permissions, in English, from the copyright holder, to publish the maps under an Open Access license. Please either upload the permission document with your submission or send it in to our inbox at scientificreports@nature.com. Please ensure the permission document adheres to the following requirements:
- Must be written in English on official institution paper
- Must explicitly state permission is granted to us (Nature Publishing Group, a division of Macmillan Publishers Ltd), to publish the images under an Open Access license.
- Permission must be granted to publish the images in all formats i.e. print and digital.
- Signed by the copyright holder 返回小木虫查看更多