REFERENCES
- Committee for Conservation of Nature at the Ministry of Bulgaria (1984) Red Book of Bulgaria, vol. 1—Plants”, Published by BAS, Sofia, pp.349.
- Ganchev I. (1950). Anabiotic desiccation resistance and other biological traits of Haberlea rhodopensis Friv. Rep. Inst. Bot. Bulg. Acad. Sci.
- Djilianov D., Genova G., Parvanova D., Zapryanova N., Konstantinova T. and Atanassov A. (2005) Plant Cell, Tissue and Organ Culture, 80(1), 115–118.
- Markovska Y., Tsonev T., Kimenov G. and Tutekova A. (1994) Journal of plant physiology, 144, 100–108.
- Stefanov K., Markovska Y., Kimenov G. and Popov S. (1992) Phytochemistry, 31(7), 2309–2314.
- Georgieva K., Szigeti Z., Sarvari E., Gaspar L., Maslenkova L., Peeva V., Peli E. and Tuba Z. (2007) Planta, 225(4), 955–964.
- Minkov I., Kimenov G. and Kalucheva I. (1977). Compt. Rend. Bulg. Acad. Sci., 30(6), 897–900.
- Yahubyan G., Denev I. and Stefanov D. (2005). In: Proceedings of the Balkan Scientific Conference of Biology in Plovdiv (Bulgaria), 2005, pp. 231–237.
- Denev I., Yahubyan G. and Stefanov D. (2005). Compt. Rend. Bulg. Acad. Sci., 58(12), 1429–1432.
- Dontcheva, S., Daskalova E., Yahubyan G., Denev I., Minkov I. and Toneva V. (2009). Biotechnology & Bioechnological Equipment, 23(2), 369–372.
- Lloyd G. and McCown B. (1980) Proc. Intl. Plant Prop. Soc., 30, 421–427.
- Tóth S., Scott P., Sorvari S. and Toldi O. (2004) Plant Science, 166(4), 1027–1034.
- Veljovic-Jovanovic S., Kukavica B. and Navari-Izzo F. (2008) Physiol Plant, 132(4), 407–416.
- Veljovic-Jovanovic S., Kukavica B., Stevanovic B. and Navari-Izzo F. (2006) J. Exp. Bot., 57(8), 1759–1768.
- Augusti A., Scartazza A., Navari-Izzo F., Sgherri C., Stevanovic B. and Brugnoli E. (2001) Photosynth. Res. 67(1–2), 79–88.
- Degl'innocenti E., Guidi L., Stevanovic B. and Navari F. (2008) J. Plant. Physiol., 165(7), 723–733.