1. The antiquity of some field and forest flora of India;Aiyer,1956
2. Chemistry and technology of citrus. Citrus products and by-products;Anonymous;USDA Agric. Handbook,1962
3. Herbs related patents. Bael. Bilva (Aegle marmelos);Anonymous;Bull. Intellectual Property Rights,2001
4. Healthy citrus;Anonymous;Citrus Industry (Florida),2004