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http://www.fauxshagreenfurniture.net/en/news/a-brief-history-of-the-shagreen-stingray-skin.html
. Accessed 15 May 2014. Copyright by fauxshagreenfurniture.net. Reprinted with permission
2. Adrien GR (1929) Process for the treatment of skins of animals containing calcified formations. United States Patent 1,725,629
3. Allen R (1920) Treating of shark–skins and the like preparatory to tanning. United States Patent 1,338,531
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5. Brunn M (2001) Shagreen (
http://cool.conservation-us.org/byform/mailing-lists/cdl/2001/0513.html
) published on-line 17.04.2001; Accessed 15 May 2014. Copyright © 2001, Foundation of the American Institute for Conservation of Historic and Artistic Works (FAIC). Reprinted with permission