REFERENCES
- Armitage P. D., Moss D., Wright J. F. and Furse M. T. (1983) Water Sites. - Water Res., 17, 333–347.
- Bondev I. (2002) In: Geography of Bulgaria (I. Kopralev, Ed.), ForKom, 336–352.
- Braun-Blanquet J. (1964) Pflanzensoziologie. Grundzuege der Vegetationkunde. 3 Aufl. Spinger Verlag, Wien-New York, 86.
- Casida L.E. Jr., Klein D.A. and Santoro R. (1964) Soil Science, 98, 371–378.
- Delipavlov D., Cheshmedzhiev I., Popova M., Terziiski D. and Kovachev I. (2003) Guideline of determination of plants in Bulgaria. Agrar. Univ., Plovdiv, 591. (In Bulgarian)
- Doblas-Miranda E., Sánchez-Piñero F. and González- Megías A. (2009) Pedobiologia 52, 361–373.
- Fredrickson J.K. and Balkwill D. L. (1998) In: Techniques in Microbial Ecology (R. S. Burlage, R. Atlas, D. Stahl, G. Geesey, Sayler G. Eds.), Oxford University Press, New York, 239–254.
- Friedel J. K., Mölter K. and Fischer W. R. (1994) Biol. Fertil. Soils., 18, 291–296.
- Hobbie J. E., Daley R. J. and Jasper S. (1977) App. Environ. Microb., 33, 1225–1228.
- Kaurichev I.S. (1980) Organic Matter Determination in Soil Samples by Thurin method. Kolos, Moscow, 212–241.
- Keeney D. R. and Nelson D.W. (1982) In: Nitrogen—inorganic forms (A. L. Page, R. H. Miller, D. R. Keeney Eds.) Agron, Monogr. 9, ASA and SSSA, Madison, WI, 643–698.
- Kenarova A., Radeva G. (2010) Compt. Rend. Acad. bulg. Sci. 63, 105–112.
- Kicaj H., Qirjo M. (2010) The Influence of Ecological Factors Like Rainfall, Temperature, Moisture for Evaluating the Millipede Population in the Southern Region of Albania. BALWOIS 2010–Ohrid, Republic of Macedonia.
- Landi F., Renella G., Moreno J.L., Falchini L. and Nannipieri P. (2000). Biol. Fertil. Soils. 32, 8–16.
- Muller-Dombois D. and Ellenberg H. (1974). Aims and Methods of Vegetation Ecology, Wiley, New York.
- Olsen S. R. (1982) In: Phosphorus (R.H. Miller, D.R. Keeney Eds.), Agron. Monogr. 9, ASA and SSSA, Madison, WI, 1040–1042.
- Rybalov L., Rossolimo T., Block W. (2000). Temperature Adaptations of Terrestrial Arthropods of the Yenisey Region of Siberia (Asian Ecological Transect). USDA Forest Service Proceedings RMRS-P-14.
- Shilev S., Bileva T., Velcheva I. (2008) Investigation on Environmental Characteristics of Microflora and Mesobiotic Fauna in Contaminated with Heavy Metals Soils (in bulgarian) Anniversary Scientific Conference of Ecology on the occasion of the 20 years anniversary of Department of Ecology and Environmental Conservation at the Faculty of Biology, University of Plovdiv “St. Paisii Hilendarski” (collection of reports) 308–318.
- Welp G. (1999) Biol. Fertil. Soils. 30, 132–139.