Ekane Peter Etape, et al. “Oxalate Free Averrhoa Carambola Fruit Juice and Wine Produced by a Modified Oxalate Route (Synthesis of Zinc Oxalate)”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 63, no. 2, Aug. 2022, pp. 42-53, https://www.gssrr.org/JournalOfBasicAndApplied/article/view/14205.