Sass, I. and Frank, K. and Bruckner, F. Arendt, A. and Annokkee, G.-J. and Bosman, R. and van der Brink, W. J. (eds.) (1993):
Comparison Between Porous Polyethylene Filters and Conventional Slot Screens in Soil Gas Extraction Wells.
In: Contaminated Soil '93, In: Fourth International KfK/TNO Conference on Contaminated Soil, Berlin, 03.-07.05.1993, pp. 1437-1438, [Conference or Workshop Item]

Sass, I. and Bayer, H.-J. Arendt, A. and Annokkee, G.-J. and Bosman, R. and van der Brink, W. J. (eds.) (1993):
Horizontal Remdiation Wells by Remote Sensed Drillings.
In: Contaminated Soil '93, In: Fourth International KfK/TNO Conference on Contaminated Soil, Berlin, 03.-07.05.1993, pp. 559-561, [Conference or Workshop Item]

Hötzl, H. and Sass, I. Arendt, A. and Annokkee, G.-J. and Bosman, R. and van der Brink, W. J. (eds.) (1993):
Remediation Wells with Porous Polyethylene Filters.
In: Contaminated Soil '93, In: Fourth International KfK/TNO Conference on Contaminated Soil, Berlin, 03.-07.05.1993, pp. 559-561, [Conference or Workshop Item]