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V. D. Zheljazkov, Craker, L. E., Xing, B., Nielsen, N. E., and Wilcox, A., Aromatic plant production on metal contaminated soils, Science of The Total Environment, vol. 395, no. 2-3, pp. 51 - 62, 2008.
V. D. Zheljazkov, Astatkie, T., and Schlegel, V., Hydrodistillation extraction time effect on essential oil yield, composition, and bioactivity of coriander oil, Journal of Oleo Science, vol. 63, no. 9, pp. 857 - 865, 2014.
V. D. Zheljazkov, Cantrell, C. L., Astatkie, T., and M. Ebelhar, W., Productivity, Oil Content and Composition of Two Spearmint Species in Mississippi, Agron J, vol. 102, pp. 129-133, 2010.
V. D. Zheljazkov, Astatkie, T., Jeliazkova, E. A., Tatman, A. O., and Schlegel, V., Distillation time alters essential oil yield, composition, and antioxidant activity of female Juniperus Scopulorum trees, Journal of Essential Oil Research, vol. 25, pp. 62-69, 2013.
V. D. Zheljazkov and Warman, P. R., Source-Separated Municipal Solid Waste Compost Application to Swiss Chard and Basil, Journal of Environment Quality, vol. 33, no. 2, p. 542, 2004.
V. D. Zheljazkov, Jeliazkova, E. A., Craker, L. E., Kovathceva, N., Stanev, S., and Margina, A., Heavy metal uptake by mint, Acta Hort. , vol. 500, pp. 111-117, 1999.
V. D. Zheljazkov, Cantrell, C. L., and Astatkie, T., Variation in podophyllotoxin concentration in leaves and rhizomes of American mayapple (Podophyllum peltatum L.), Industrial Crops and Products, vol. 33, no. 3, pp. 633 - 637, 2011.
V. D. Zheljazkov, Callahan, A., and Cantrell, C. L., Yield and oil composition of thirty-eight basil (Ocimum basilicum L.) accessions grown in Mississippi, J. Agric. Food Chem. , vol. 56, pp. 241-245, 2008.
V. D. Zheljazkov, Astatkie, T., and Schlegel, V., Distillation time changes oregano essential oil yields and composition but not the antioxidant or antimicrobial activities, vol. 47, pp. 777-784, 2012.
V. D. Zheljazkov and Nikolov, S., ACCUMULATION OF CD, PB, CU, MN, AND ZN BY SYLIBUM MARIANUM L. GROWN ON POLLUTED SOILS, Acta Horticulturae, no. 426, pp. 297 - 308, 1996.
V. D. Zheljazkov and Jekov, D., HEAVY METAL CONTENT IN SOME ESSENTIAL OILS AND PLANT EXTRACTS, Acta Horticulturae, no. 426, pp. 427 - 434, 1996.
V. D. Zheljazkov, Patterson, K., Parsons, K. J., and Sampson, G., Tolerance of bare-root ornamental perennials to selected herbicides, Canadian Journal of Plant Science, vol. 87, no. 2, pp. 439 - 442, 2007.
V. D. Zheljazkov, Basil, Plant Production, 1998.
V. D. Zheljazkov, Astatkie, T., Horgan, T., and S Rogers, M., Effect of plant hormones and distillation water on mints, HortScience, vol. 45, no. 9, 2010.
V. D. Zheljazkov, Assessment of wool-waste and hair-waste as soil amendment and nutrient source, J. Environ. Qual., vol. 34, pp. 2310-2317, 2005.
V. D. Zheljazkov and Astatkie, T., Effect of Residual Distillation Water of 15 Plants and Three Plant Hormones on Scotch Spearmint (Mentha x gracilis Sole), Industrial Crops and Products, vol. 33, pp. 704-709, 2011.
V. D. Zheljazkov, Yankov, B., and Topalov, V., Comparison of Three Methods of Mint Propagation and Their Effect, 1994.
V. D. Zheljazkov, Astatkie, T., Shiwakoti, S., Poudyal, S., Horgan, T., Kovatcheva, N., and Dobreva, A., Essential Oil Yield and Composition of Garden Sage as a Function of Different Steam Distillation Times, HortScience, vol. 49, pp. 785-790, 2014.
V. D. Zheljazkov, Topalov, V., Yankov, B., Terziev, J., and Dimitrov, I., Changes in the quality of Mentha rhizome as depending on the time of overground mass harvesting and the method of weed control, Higher Institute of Agriculture – Plovdiv, Scientific Works, vol. 37, pp. 239-247, 1992.
V. D. Zheljazkov and Warman, P. R., Comparison of three digestion methods for the recovery of 17 plant essential nutrients and trace elements from six composts, Compost Sci. and Util., vol. 10, pp. 197-203, 2002.
V. D. Zheljazkov, Astatkie, T., and Schlegel, V., Effects of distillation time on the Pinus ponderosa essential oil yield, composition, and antioxidant activity, HortScience, vol. 47, no. 6, 2012.
V. D. Zheljazkov, Cantrell, C. L., Astatkie, T., and Jeliazkova, E. A., Fall frosts effects on the essential oil of "Native" spearmint in Wyoming, HortScience, vol. 11, pp. 1603-1606, 2012.
V. D. Zheljazkov and Nielsen, N. E., Studies on the Effect of Heavy Metals (Cd, Pb, Cu, Mn, Zn and Fe) upon the Growth, Productivity and Quality of Lavender (Lavandula angustifolia Mill.) Production, Journal of Essential Oil Research, vol. 8, no. 3, pp. 259 - 274, 1996.
V. D. Zheljazkov, Astatkie, T., Jeliazkova, E. A., Heidel, B., and Ciampa, L., Essential oil content, composition and bio activity of juniper species in Wyoming, United States, Natural Product Communications, vol. 12, pp. 201-204, 2017.
V. D. Zheljazkov, Yankuloff, Y., Raev, R. Tsevtkov, Stanev, S., Margina, A., and Kovatcheva, N., Achievements in breeding on medicinal and aromatic plants in Bulgaria, Beitrage zur Zuchtungsforschung , vol. 2, pp. 142-145, 1996.

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