Chemistry of plant protection: Analysis of pesticides in ground and surface water 2: Latest developments and state of the art of multiple residue methods - Brandt, A. ; Brinkman, U. A. T. ; Butz, S. ; Burger, K. ; Keever, J. ; Levsen, K. ; Linkerhagner, M. ; Louter, A. J. H. ; Noij, T. H. M. ; Scott, B. F. ; Stan, H. J. ; Volmer, D. ; Voyksner, R. D. ; Vreuls, J. J. ; Wylie, P. L. (Springer - Verlag Berlin Heidelberg, 1995)