1. Abbott, A. J. (1963). The growth and development of excised roots in relation to trace element deficiencies. Ph.D. Thesis, University of Bristol.
2. Studies on the growth of isolated roots of barley and oats;Almestrand;Physiol. Plant.,1949
3. Further studies on the growth of isolated roots of barley and oats;Almestrand;Physiol. Plant.,1950
4. The effects of pyridoxine on the growth of isolated grass roots;Almestrand;Physiol. Plant.,1951
5. Growth and metabolism of isolated cereal roots;Almestrand;Physiol. Plant.,1957