- By-side impurities in chloronaphthalene mixtures of the Halowax series: all 209 chlorobiphenyls. Noma, Y., Ishikawa, Y., Falandysz, J., Jecek, L., Gulkowska, A., Miyaji, K., Sakai, S. Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering. (2004)