1. Grain yield loss due to iron toxicity.;Abifarin A. O.;WARDA (West Africa Rice Development Association) Techn. Newsl.,1988
2. Abifarin A. O.(1990): Progress in breeding rice for tolerance to iron toxicity. WARDA Annual Report 1989. West Africa Rice Development Association Bouaké Côte d'Ivoire pp. 34–39.
3. Performance of selected varieties and advanced generation genotypes in rainfed lowland iron‐toxic soil.;Abraham M. J.;Int. Rice Res. Newsl.,1989
4. Cultural practices to reduce iron toxicity in rice.;Abu M. B.;Int. Rice Res. Newsl.,1989
5. Akbar M. Gunawardena I. Ponnamperuma N.(1987): Breeding for soil stresses: Progress in rainfed lowland rice. The International Rice Research Institute Manila The Philippines pp. 263–272.