“Synthesis and Quantitation of Genotoxic impurity 5-cyano-2-((4-fluorophenyl) (hydroxy) benzyl 4-methyl benzene sulfonate in Escitalopram Oxalate by RP-UPLC”, Int J of Pharm Chem, vol. 7, no. 8, pp. 131–138, Aug. 2017, doi: 10.7439/ijpc.v7i8.4292.