A. S. Rao, K. Ramesh, K. Rajanna, and I. Chakrvarthi, “Ultrasonically Assisted Halogenation of Aromatic Compounds using Isoquinolinium Bound Hypervalent Chromium and Tetrabutylammonium Halides in PEG-600 Solutions under Acid Free and Solvent-Free Conditions”, ajc, vol. 30, no. 8, pp. 1892–1896, Jun. 2018.