1. Baker, R., Phillips, D. J. 1962. Obtaining pathogen-free stock by shoot tip culture. Phytopathology 52: 1242–1244.
2. Boyer, J. S. 1982. Plant productivity and environment. Science 218: 443–448.
3. Boyer, J. S. 1995. Measuring the water status of plants and soils. Academic Press, San Diego, pp 178.
4. Boyer, J. S., Knipling, E. B. 1965. Isopiestic technique for measuring leaf water potentials with a thermocouple psychrometer. Proc. Natl. Acad. Sci. USA 54: 1044–1051.
5. Candan, N., Tarhan, L. 2003. The correlation between antioxidant enzyme activities and lipid peroxidation levels in Mentha pulegium organs grown in Ca2+, Mg2+, Cu2+, Zn2+ and Mn2+ stress conditions. Plant Sci. 165: 769–776.