Rizk, M. et al. 2018. Development and validation of second derivative and synchronous spectrofluorimetric methods for determination of oxytocin and ergometrine maleate in their combined formulation. European Journal of Chemistry. 9, 3 (Sep. 2018), 241–250. DOI:https://doi.org/10.5155/eurjchem.9.3.241-250.1724.