V. D. Zheljazkov, Jeliazkova, E. A., Craker, L. E., Yankov, B., Georgieva, T., Kolev, T., Kovatcheva, N., Stanev, S., and Margina, A.,
“HEAVY METAL UPTAKE BY MINT”,
Acta Horticulturae, no. 500, pp. 111 - 118, 1999.
V. D. Zheljazkov, Terziisky, D., and Karageorgiev, S.,
“Pollen Morphology of Bulgarian Ocimum basilicum L. Populations”,
Journal of Herbs, Spices & Medicinal Plants, vol. 4, no. 3, pp. 71 - 76, 1997.
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, Yankov, B., and Topalov, V.,
“Effect of Mechanical and Chemical Weed Control on the Growth, Development and Productivity of Mentha piperita and M. arvensis var. piperascens Grown for Planting Material”,
Journal of Essential Oil Research, vol. 8, no. 2, pp. 171 - 176, 1996.
V. D. Zheljazkov, Yankov, B., and Topalov, V.,
“Comparison of Three Methods of Mint Propagation and Their Effect on the Yield of Fresh Material and Essential Oil”,
Journal of Essential Oil Research, vol. 8, no. 1, pp. 35 - 45, 1996.
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.