Khalili, Rachid, and Olev Vinn. “First Record of Blister Pearls in the Oyster Hyotissa Hyotis (Linné, 1758) from Pliocene Deposits at Sidi Brahim, Lower Chelif Basin (north-West Algeria)”. Geologos, vol. 29, no. 3, Dec. 2023, pp. 167-72, doi:10.14746/logos.2023.29.3.16.