References
- Apostolova, I. & Slavova, L. 1997: Compendium of Bulgarian plant communities. Published during 1891-1995, Sofia, 340 pp.
- Assyov, B. & Petrova, A. (eds). 2006: Conspectus of the Bulgarian Vascular Flora. Distribution maps and floristic elements. Bulgarian Biodiversity Foundation, Sofia, 452 pp.
- Barkman, J. J., Doing, H. & Segal, S. 1964: Kritische Bemerkungen und Vorschläge zur quantitativen Vegetationsanalyse. - Acta Bot. Neerl. 13: 394-419.
- Bohn, U., Gollub, G., Hettwer, Ch., Neuhäuslová, Z., Raus, T., Schlüter, H. & Weber, H. 2003: Karte der Natürlichen Vegetation Europas. Bundesamt für Naturschutz., Bonn, 656 pp.
- Bondev, I. 2002: Geobotanic regioning. In: Kopra-lev, I. (ed.) Geography of Bulgaria, Publ. House ForCom pp. 336-352 (in Bulgarian).
- Braun-Blanquet, J. 1964: Pflanzensoziologie. Grundzüge der Vegetationskunde. 3.ed. Springer, Wien, 865 pp.
- Bruelheide, H. 1995: Die Grünlandgesellschaften des Harzes und Standortsbedingungen mit einem Beitrag zum Gliederungspringsprinzip auf der Basis von statistisch ermittelten Artengruppen. Diss. Bot. 244: 1-338.
- Chytrý, M. & Otýpková, Z. 2003: Plot sizes used for phytosociological sampling of European vegetation. J. Veg. Sci. 14: 563-570.
- Chytrý, M., Tichý, L., Holt, J. & Botta-Dukát, Z. 2002: Determination of diagnostic species with statistical fidelity measures. Journal of Vegetation Science 13: 79-90.
- Dierschke, H. 1986: Entwicklung und heutiger Stand der Syntaxonomie von Silikat-Trocken-rasen und verwadten Gesellschaften in Europa. Phytocoenologia 14(3): 399-416.
- Ganeva, A. & Düll, R. 1999: A contribution to the Bulgarian bryoflora. Checklist of the Bulgarian bryophytes. In: Düll, R., Ganeva, A., Martinčič, A. & Pavletić, Z. Contributions to the bryoflora of former Yugoslavia and Bulgaria. 1 Auflage. IDH-Verlag Bad Münstereifel, pp. 111-199.
- Hennekens, S.M. & Schaminée, J.H.J. 2001: TURBOVEG, a comprehensive data base management system for vegetation data. Journal of Vegetation Science 12: 589-591.
- Hill, M.O. 1979: TWINSPAN - a FORTRAN program for arranging multivariate data in an ordered two-way table by classification of individuals and attributes. Section of Ecology and Systematics. Cornell University, Ithaca.
- Horvat, I., Glavač, V. & Ellenberg, H. 1974: Vegetation Südosteuropas. Gustav Fisher Verlag, Stuttgart, 767 pp.
- ISO 10390. 1994: Soil quality - determination of pH.
- ISO 11464. 1994: Soil quality - Pretreatment of samples for physico-chemical analyses.
- Kononova, M. M. 1966: Soil Organic Matter. Its Nature, its Role in Soil Formation. (2nd ed.). Pergamon, N.Y., 544pp.
- Kozhuharov, S. (ed.). 1992: Field Guide to the Vascular Plants in Bulgaria. Naouka & Izkoustvo, Sofia (in Bulgarian).
- Matevski, V. & Kostadinovski, M. 1998: Biserrulo-Scleranthetum dichotomae Matevski & Kostadinovski ass. nova vo vegetatijata na brdskite pasišta na Republika Makedonija. God. Sborn. Biol. 51: 25-35. (in Macedonian)
- Meshinev, T., Apostolova, I., Georgiev, V., Dimitrov, V., Petrova, A. & Veen, P. 2005: Grasslands of Bulgaria. Final report on the National Grasslands Inventory Project - Bulgaria, 2001-2004. Dragon 2003 Ltd. Publishers, Sofia.
- Micevski, K. 1970: Astragalo-Potentilletalia, eine neue Vegetationsordnung der Bergweiden Mazedoniens. Contributions, 2-Section for Natural sciences and Mathematics, Macedonian Academy of Sciences and Arts, 2: 15-23 (in Macedonian).
- Micevski, K. 1972: Tunico-Trisetum myrianthi Micev. ass. nov. vo vegetacijata na brdskite pasishta vo Makedonija. Ann. Biol. Fac. Sc. Univ. Kiril i Metodij, 24: 59-65 (in Macedonian).
- Micevski, K. 1973: Helianthemo-Euphorbietum thessalae Micev. ass. nov. vo vegetacijata na brdskite pasišta vo Makedonija. Ann. Biol. Fac. Sc. Univ. Kiril i Metodij, 25: 149-155 (in Macedonian).
- Micevski, K. 1977: Erysimo-Trifolietum Micev. ass. nov. in der Vegetation Makedoniens. Contributions, 1-Section for Natural sciences and Mathematics, Macedonian Academy of Sciences and Arts, 9: 76-82 (in Macedonian).
- Micevski, K. 1978: Typologishe Untersuhungen der Wiesen- und Weiden-Vegetation der gebiete Maleš und Pijanec. Maleš and Pijanec I, MAWV, 9-41 (in Macedonian).
- Micevski, K. & Matevski, V. 1984: Diantho-Cistetum incani Micevski et. Matevski ass. nov. in der Vegetation der Montanen Weideflächen der SR Makedonien. Contributions, 2-Section of Biological and Medical Sciences, Macedonian Academy of Sciences and Arts, 5: 11-16 (in Mace-donian).
- Mucina, L. 1997: Conspectus of classes of European vegetation. Folia Geobot. Phytotax. 32: 117-172.
- Natcheva, R. & Ganeva, A. 2005: Check-list of the bryophytes of Bulgaria with data on their distribution. II. Musci. Cryptog. Bryol. 26(2): 209-232.
- Pérez Prieto, d. & Font, X. 2005: Revisión sintax-onómica a nivel de subalianza del order Helian-themetalia guttati en la Península Ibérica e Islas Baleares. Acta Botanica Malacitana 30: 139-156.
- Rodwell, J., Schaminée, J., Mucina, L., Pignatti, S., Dring, J. & Moos, D. 2002: The Diversity of European Vegetation. An overview of phytosociological alliances and their relationships to EUNIS habitats. Wageningen, NL. Report ECLNV nr. 2002/054.
- Royer, J.M. 1991: Synthèse eurosibérienne, phytosociologique et phytogéographique de la classe des Festuco-Brometea.Diss. Bot. 178:1-296.
- Sopotlieva, D. (in press): The high-rank syntaxa of semi-natural grasslands in Straldzha-Ajtos phytogeographic region. Phytol. Balcan. Vol.13 Suppl.
- Tichý, L. 2002: JUICE, software for vegetation classification. Journal of Vegetation Science 13: 451-453.
- Tichý, L. & Chytrý, M. 2006: Statistical determination of diagnostic species for site groups of unequal size. Journal of Vegetation Science 17: 809-818.
- Wendelberger, G. 1965: Zur Vegetationsgliederung Südosteuropas. Mitt. d. Naturwiss. Vereins f. d. Steiermark. 95: 245-286.
- Westhoff, V. & van der Maarel, E. 1980: The Braun-Blanquet Approach. In: Whittaker, R.H. (ed.): Classification of Plant Communties. Junk, The Hague, Pp. 289-399.