1. Inter-relationships between Salvinia rotundifolia and Spirodela polyrhiza at various interaction stages;Agami;J. Aquat. Plant Manage.,1989
2. Inter-relationships between Eichhornia crassipes and Hydrocotyle umbellata;Agami;Aquat. Bot.,1991
3. Inter-relationships between Najas marina L. and three other species of aquatic macrophytes;Agami;Hydrobiologia,1985
4. Regeneration of Najas marina L. and of Potamogeton lucens L. after selective clipping of an established mixed stand;Agami,1986
5. Standard Methods for the Examination of Water and Wastewater;American Public Health Association,1985