I. Zhalnov and Zheljazkov, V. D.,
“Competitive intraspecific relations on Sorghum halepense (L.) Pers. ”,
Higher Institute of Agriculture – Plovdiv, Scientific Works, vol. 37, pp. 113-118, 1992.
V. D. Zheljazkov, Zhalnov, I., and Nedkov, N. K.,
“Herbicides for Weed Control in Blessed Thistle (Silybum Marianum)”,
Weed Technology, vol. 31, no. 3, pp. 1030 - 1034, 2006.
V. D. Zheljazkov, Astatkie, T., Zhalnov, I., and Georgieva, T. D.,
“Method for attaining rosemary essential oil with differential composition from dried or fresh material”,
Journal of Oleo Science, vol. 64, no. 5, pp. 485 - 496, 2015.
V. D. Zheljazkov, Astatkie, T., Zhalnov, I., and Georgieva, T. D.,
“Method for attaining rosemary essential oil with differential composition from dried or fresh material”,
Journal of Oleo Science, vol. 64, pp. 485-496, 2015.
I. Dimitrov, Zheljazkov, V. D., and Zhalnov, I.,
“Productivity of soybean cultivars and their effect on soil fertility”,
Higher Institute of Agriculture – Plovdiv, Scientific Works, vol. 4, pp. 91-94, 1995.