Mellal, Mohamed; Bensouilah, Mourad (11 September 2018). "Reproductive habitat provisioning promotes survival and reproduction of the endangered endemic damselfly Calopteryx exul". Journal of Insect Conservation. 22 (3–4): 563–570. Bibcode:2018JICon..22..563M. doi:10.1007/s10841-018-0085-5. S2CID53098955.
Khelifa, Rassim (11 July 2016). "Partial bivoltinism and emergence patterns in the North African endemic damselfly Calopteryx exul: conservation implications". African Journal of Ecology. 55 (2): 145–151. doi:10.1111/aje.12332.
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Mellal, Mohamed; Bensouilah, Mourad (11 September 2018). "Reproductive habitat provisioning promotes survival and reproduction of the endangered endemic damselfly Calopteryx exul". Journal of Insect Conservation. 22 (3–4): 563–570. Bibcode:2018JICon..22..563M. doi:10.1007/s10841-018-0085-5. S2CID53098955.