V. D. Zheljazkov, Cantrell, C. L., Astatkie, T., Schlegel, V., Jeliazkova, E. A., and Lowe, D.,
“Effect of Coal-Bed Methane Water on Spearmint and Peppermint”,
J. Environ. Qual, vol. 42, pp. 1815-1821, 2013.
V. D. Zheljazkov, Cantrell, C. L., Astatkie, T., Schlegel, V., Jeliazkova, E. A., and Lowe, D.,
“The Effect of Coal-Bed Methane Water on Spearmint and Peppermint”,
Journal of Environment Quality, vol. 42, no. 6, p. 1815, 2013.