1. Studies on fertilizer supply to tulips. I. The effects of varied amounts of three nutrient elements on the growth of plants and the yield of bulbs;Amaki;J. Hortic. Assoc. (Japan),1960
2. Studies on fertilizer supply to tulips. II. The differences in growing of tulip bulbs produced by supplying different amounts of fertilizers in preceding generation, during the forcing and field culture;Amaki;J. Hortic. Assoc. (Japan),1960
3. The effects of rates of supply of nitrogen, phosphorus, potassium and magnesium on leaf and stem growth, flowering and “topple” of Golden Harvest and Elmus tulip;Cheal;Ann. Appl. Biol.,1964
4. The residual effect of previous nutritional treatments on the growth and composition of tulips supplied with complete nutrients in sand culture;Cheal;Ann. Appl. Biol.,1966
5. Holland Bulb Forcers Guide;De Hertogh,1977