1. Alvarado R, Hernaíz S (1995) Manual de Producción de Arroz. Ministerio de Agricultura. Programa de Reconversión de Suelos Arroceros. Ser Quilamapu 6:21–69
2. Bisoyi RN, Singh PK (1988) Effect of phosphorous fertilisation on blue green algal inoculun production and nitrogen yield under field conditions. Biol Fertil Soils 4:338–343
3. de Halperin DR, de Cano MS, de Mulé MC, Zand de Caire GZ (1992) Diazotrophic cyanobacteria from Argentine paddy fields. Phyton 53:135–142
4. Desikachary TV (1959) Cyanophyta. Indian Council of Agricultural Research, New Delhi
5. Fernández-Valiente E, Quesada A, Nieva M, Leganés F, Prosperi C, Martín Trillo M, Carreres R, González R (1996) Contribution of biological nitrogen fixation to rice production in a Mediterranean rice field. In: Rahman M, Podder AK, van Hove C, Tahmida Begum ZN, Heulin T, Hartman A (eds) Biological nitrogen fixation associated with rice production. Kluwer, Dordrecht, pp 147–157