Bishnoi, Abha, Krishna Srivastava, Suruchi Singh, and Chandrakant Mani Tripathi. 2011. “Facile Synthesis of 3-(1-(4’-(3-Chloro-2-(substituted Phenyl)-4-Oxoazetidin-1-yl)biphenyl-4-Yl)-5-Oxo-2-Phenyl-1H-Imidazol-4(5H)-ylidene)indolin-2-Ones: β-Lactam Derivatives As Antimicrobes”. European Journal of Chemistry 2 (3):359-64. https://doi.org/10.5155/eurjchem.2.3.359-364.439.