1. ABELES, F. B. 1972. Biosynthesis and mechanism of action of ethylene. Ann. Rev. Plant Physiol. 23: 259-292.
2. BURG, S. P. and E. A. BURG. 1965. Ethylene action and ripening of fruits. Science 148: 1190-1196.
3. CASTLE, W. S. and A. H. KREZDORN. 1979. Anatomy and morphology of field-sampled citrus fibrous roots as influenced by sampling depth and rootstock. HortScience 14: 603-605.
4. CROSSETT, R. N. and D. J. CAMPBELL. 1975. The effects of ethylene in the root environment upon the development of barley. Plant and Soil 42: 453-464.
5. GOODLASS, G. and K. A. SMITH. 1978. Effect of organic amendments on evolution of ethylene and other hydrocarbons from soil. Soil Biol. Biochem. 10: 201-205.