Euigyang Jeong Freeman, H. S., Jeong, E., & Claxton, L. D. (2013). Characterization of metabolites of genotoxic 4,4 '-aminoalkoxyazobenzene dyes. DYES AND PIGMENTS, 99(2), 496–501. https://doi.org/10.1016/j.dyepig.2013.06.001 Jeong, E., Freeman, H. S., & Claxton, L. D. (2010). [Review of Synthesis and characterization of selected 4,4 '-diaminoalkoxyazobenzenes]. DYES AND PIGMENTS, 87(2), 100–108. https://doi.org/10.1016/j.dyepig.2010.03.002