1. The Disposal of Washwater Sludge by Freezing;Doe;Jour. Instit. of Water Engrs.,1965
2. Water Treatment Sludge Disposal Practices in England;Young;Jour. AWWA,1968
3. Present Practices in the Treatment of Liquid Wastes at the Atomic Energy Research Establishment, Harwell;Burns,1966
4. Low-Level Waste Treatment at Reactor Centrum Nederland;Smeets,1966