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2. FAO (1996) Report on the State of the World’s Plant Genetic Resources for Food and Agriculture. Food and Agriculture Organization of the United Nations, Rome
3. FAO and IPGRI (1994) Genebank Standards. Food and Agriculture Organization of the United Nations, IPGRI, Rome
4. Cromarty AS, Ellis RH, Roberts EH (1982) The design of seed storage facilities for genetic conservation. Handbooks for Genebanks No 1. IPGRI, Rome
5. Ellis RH, Hong TD, Roberts EH (1985) Handbook of seed technology for genebanks Vol. I: principles and methodology. Handbooks for Genebanks No. 2. IPGRI, Rome