1. Simple apparatus for on-site continous liquid—liquid extraction of organic compounds from natural waters;Ahnoff;Analyt. Chem.,1974
2. Quantitation and characterization of petroleum hydrocarbons in Baltic Sea water;Ahnoff,1976
3. Oil contamination of Melville Bay water after the Potomac accident in August 1977;Ahnoff,1979
4. Chlorinated hydrocarbons in the Dansk Basin;Andrewlewicz;Project EPA-USA No. PR. 05. 532-13,1977
5. Chlorinated hydrocarbons in the cross-section Gdynia - “BOSEX-77” area;Andrulewicz,1979