College of Agricultural Sciences

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, Yankov, B., and Topalov, V., “Comparison of three methods of mint propagation and their effect on the yield of fresh material and essential oil”, J. Essent. Oil Res., vol. 8, pp. 35-45, 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 Mentha arvensis var. piperascens grown for planting material”, J. Essent. Oil Res., vol. 8, pp. 171-176, 1996.

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.

E. A. Jeliazkova, Zheljazkov, V. D., Craker, L. E., Yankov, B., and Georgieva, T., “NPK FERTILIZER AND YIELDS OF PEPPERMINT, MENTHA X PIPERITA”, Acta Horticulturae, no. 502, pp. 231 - 236, 1999.