1. Salt Marshes and Salt Deserts of the World;Chapman,1960
2. Coastal Vegetation;Chapman,1976
3. Wet Coastal Ecosystems;Chapman,1977
4. Classification of Wetland and Deepwater Habitats of the United States;Cowardin,1979
5. Species diversity in aquatic angiospermsLatitudinal patterns;Crow;Aquatic Botany,1993