1. Wang LK, Wang MHS (1989) Bubble dynamics and air dispersion mechanisms of air flotation process systems, part a: material balances. In: Proceedings of the 44th Industrial Waste Conference, IN, USA. pp 505–515, May 9–11, 1989
2. Krofta M, Wang, LK (1989) Bubble dynamics and air dispersion mechanisms of air flotation process systems, part b: air dispersion. In: Proceedings of the 44th Industrial Waste Conference, IN, USA. pp 505–515, May 9–11, 1989
3. Wang LK, Mahoney WJ 1989 Treatment of storm run-off by oil-water separation, flotation, filtration and adsorption, part a: wastewater treatment. In: Proceedings of the 44th Industrial Waste Conference, pp 655–666, May 1989
4. Wang LK, Wang MHS, Mahoney WJ 1989 Treatment of storm run-off by oil water separation, flotation, filtration and adsorption, part B: waste sludge management. In: Proceedings of the 44th Industrial Waste Conference, IN, USA. pp 667–673, May 1989
5. Wang LK (1989) Using air flotation and filtration in removal of color, trihalomethane precursors and giardia cysts. In: New York State Department of Health Workshop on Water Treatment Chemicals and Filtration, Ramada Inn, Saratoga Springs, NY, May 1989. The 1989 American Slow Sand Association Annual Meeting, Thatcher State Park Regional Maintenance Center, NY, USA. 30 p. Oct 20, 1989