Taylan, B. & Bayhan, B. & Saglam, C. & Kara, A. (2019)
First observation of the embryos of spiny butterfly ray, Gymnura altavela (Linnaeus, 1758) (Chondrichthyes: Gymnuridae) from Eastern Mediterranean, a species critically endangered.
Fresenius Environmental Bulletin, 28(4A), 3147–3152