“Facile Preparation of Poly (citric Acid -Co- Ethylene Glycol) and Poly (Tartaric Acid -Co- Glycerol) As a Retarder for Oil Well Cement”. Basrah Researches Sciences, vol. 49, no. 2, Dec. 2023, pp. 8-21, https://doi.org/10.56714/bjrs.49.2.2.