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References & Further Reading
- Effects of daffodil flowers on the water relations and vase life of roses and tulips – W G van Doorn
- Effects of daffodil flowers and cobalt chloride on the vase life of cut rose (£) – E Aslmoshtaghi and others
- Daffodil flowers delay senescence in cut iris flowers – W G van Doorn and others
- The chemistry of daffodils – Periodic Graphics, C&EN