[
1. Asenov, I.; Nikolov, S., Pharmacognosy. Medicina i fizkultura Publishing House, Sofia, 1988 (in Bulgarian).
]Search in Google Scholar
[
2. Asyov, B.; Petrova, A.; Dimitrov, D.; Vasilev, R., Conspectus of the Bulgarian vascular flora. Distribution maps and floristic elements. Bulgarian Biodiversity Foundation, Sofia, 2012 (in Bulgarian).
]Search in Google Scholar
[
3. Atanasov, B. (editor). Means of hygiene, prevention and treatment of oral cavity. Avtospektar Publishing House, Plovdiv, 2002 (in Bulgarian).
]Search in Google Scholar
[
4. Bernhard-Smith, A., Poisonous plants of all countries. BiblioLife, LLC, 2009.
]Search in Google Scholar
[
5. Churolinov, P., Phytotherapy in dermatology and cosmetics. Medicina i fizkultura Publishing House, Sofia, 1976 (in Bulgarian).
]Search in Google Scholar
[
6. Decision of the Commission by 9 February 2006 amending Decision 96/335/EC establishing an inventory and a common nomenclature of ingredients used in cosmetic products, Official Journal of the European Union, ОВ L 97/1, 5.4. 2006.
]Search in Google Scholar
[
7. Hiller, K.; Bickerich, G., Giftpflanzen. Urania-Verlag, Leipzig, Jena, Berlin, 1990 (in German).
]Search in Google Scholar
[
8. Ivanov, I., The healing properties of plants. Zhanet 45 Publishing House, Plovdiv, 2007 (in Bulgarian).
]Search in Google Scholar
[
9. Ivanov, I.; Landzhev, I.; Neshev, G., Herbs in Bulgaria and their use. Zemizdat Publishing House, Sofia, 1973 (in Bulgarian).
]Search in Google Scholar
[
10. Kitanov, B., Identification and collection of herbs. Zemizdat Publishing House, Sofia, 1987 (in Bulgarian).
]Search in Google Scholar
[
11. Landzhev, I., Encyclopedia of Medicinal Plants in Bulgaria. Herbs, diseases, recipes. Trud Publishing House, Sofia, 2005 (in Bulgarian).
]Search in Google Scholar
[
12. Medicinal Plants Act, Annex. State Gazette number 29, 7 April 2000, pp. 9–29 (in Bulgarian).
]Search in Google Scholar
[
13. Medicinal plants - natural wealth, medicine and livelihood. Handbook for Journalists, Information and Nature Protection Foundation, Sofia, 2015, Website: http://susherbsbg.eu/wp-content/uploads/mediabook/narachnik_jurnalisti.pdf.
]Search in Google Scholar
[
14. Muenscher, W. C., Poisonous plants of the United States. The Macmillan Company, New York, 1960.
]Search in Google Scholar
[
15. Neshev, G.; Landzhev, I., Guide to Herbs. Dr. Petar Beron State Publishing, Sofia, 1989 (in Bulgarian).
]Search in Google Scholar
[
16. Nikolov, S. (Editor in Chief). Specialized encyclopedia of medicinal plants in Bulgaria. Trud Publishing House, Sofia, 2006 (in Bulgarian).
]Search in Google Scholar
[
17. Obretenov, A.; Obretenova, D., Medicinal and essential plants. Tree and shrub species. Nova zvezda Publishing House, Sofia, 2002 (in Bulgarian).
]Search in Google Scholar
[
18. Pamukov, D.; Ahtardzhiev, H., Natural pharmacy. Zemizdat Publishing House, Sofia, 1989 (in Bulgarian).
]Search in Google Scholar
[
19. Petkov, V. (Editor). Modern phytotherapy. Medicina i fizkultura Publishing House, Sofia, 1982 (in Bulgarian).
]Search in Google Scholar
[
20. Rycroft, R. J.; Menné, T.; Frosch, P. J.; Lepoitterin, J-P. (Editors). Textbook of contact dermatitis. Springer-Verlag, Berlin, Heidelberg, New York, 2001.10.1007/978-3-662-10302-9
]Search in Google Scholar
[
21. Staneva, D.; Panova, D.; Raynova, L.; Asenov, I., Herbs in every home. Medicina i fizkultura Publishing House, Sofia, 1982 (in Bulgarian).
]Search in Google Scholar
[
22. Stefanov, B.; Kitanov, B., Kultigenen plants and kultigenen vegetation in Bulgaria. Publishing House of BAS, Sofia, 1962 (in Bulgarian).
]Search in Google Scholar
[
23. Stoyanov, N., Our medicinal plants. Vol. 1. Nauka i izkustvo Publishing House, Sofia, 1972 (in Bulgarian).
]Search in Google Scholar
[
24. Stoyanov, N., Our medicinal plants. Vol. 2. Nauka i izkustvo Publishing House, Sofia, 1973 (in Bulgarian).
]Search in Google Scholar
[
25. Stoyanov, N.; Kitanov, B., Useful wild plants in Bulgaria. Publishing House of BAS, Sofia, 1960 (in Bulgarian).
]Search in Google Scholar
[
26. Tampion, J., Dangerous plants. Universe Books, New York, 1977.
]Search in Google Scholar
[
27. Tashev, A.; Dimitrova, V., Medicinal Plants of Bulgaria, Current Perspectives on Medicinal and Aromatic Plants, 2019, 2, 29-39.10.38093/cupmap.596100
]Search in Google Scholar
[
28. Wagstaff, D. J., International poisonous plants checklist: an evidence-based reference. CRC Press, Boca Raton, London, New York, 2008.10.1201/9781420062533
]Search in Google Scholar
[
29. Yonkova, I.; Krumov, R., Herbs - Health, beauty and business. Kalendola Publishing House, Plovdiv, 1999 (in Bulgarian).
]Search in Google Scholar
[
30. Yordanov, D.; Nikolov, P.; Boychinov, A., Phytotherapy. Medicina i fizkultura Publishing House, Sofia, 1966 (in Bulgarian).
]Search in Google Scholar
