1. Amoros C, Van Urk G (1989) Palaeoecological analyses of large rivers: some principles and methods. In: Petts GE, Moller H, Roux AL (eds) Historical change of large alluvial rivers:Western Europe, Wiley, Chichester, pp 143–65
2. Anand N (1998) Indian fresh water microalgae. Bishen Singh Mahendra Pal Singh, Dehradun, pp 1–94
3. Archibald REM (1972) Diversity in some South African diatom associations and its relation to water quality. Water Res 6:1229–1238
4. Archibald REM, Schoeman FR (1984) Amphora coffeaeformis (Agardh) Kützing: a revision of the species under light and electron microscopy. S Afr J Bot 3(2):83–102
5. Archibald REM, Schoeman FR (1985) Amphora hybrida Grunow (Bacillariophyceae)—its identity and taxonomy. Nova Hedwig 41:159–166