Sci. Total Environ.

Ikan, R., Ioselis, P., Rubinsztain, Y., Aizenshtat, Z., Miloslavsky, I., Yariv, S., Pugmire, R., Anderson, L. L., Woolfenden, W. R., Kaplan, I. R., Dorsey, T., Peters, K. E., Boon, J. J., de Leeuw, J. W., Ishiwatari, R., Morinaga, S., Yamamoto, S., Macihara, T., Muller-Vonmoos, M.& Rub, A. (1992). Chemical, isotopic, spectroscopic and geochemical aspects of natural and synthetic humic substances. Sci. Total Environ., 117/118, 1–12.