- Methods of avoiding pollution of the Baltic Sea by phenols through the Purtse RiverKallas, Juha; Munter, Rein; Pikkov, LuiEnvironmental Protection Strategy Standardization and Control of Pollution Load on the Marine Environment : 1st International Conference, 20-24 September 1993, Tallinn, Estonia : abstracts1993 / p. 28
- Methods of avoiding pollution of the Baltic Sea by phenols through the Purtse RiverPikkov, Lui; Kallas, Juha; Munter, ReinProceedings of the 1-st International Conference on the Environment Protection Strategy1993 / p. 28-29