| ELEMENTAL COMPOSITION OF AIR PARTICULATE (PM10) IN SOFIA BY EDXRF TECHNIQUES. B Veleva, E Hristova, E Nikolova, M Kolarova, R Valcheva Journal of Chemical Technology & Metallurgy 49 (2), 2014 | 14 | 2014 |
| Essential and toxic element concentrations in medical herbs from Rila and Pirin (Bulgaria) measured using Energy Dispersive X-ray Fluorescence (EDXRF) Analysis EL Nikolova, RD Valcheva, CV Angelov Acta Zoologica Bulgarica 69, 163-167, 2018 | 9 | 2018 |
| Seasonal variation of PM10 elemental composition in urban environment B Veleva, E Hristova, E Nikolova, M Kolarova, R Valcheva Journal of International Scientific Publications: Ecology and Safety 8, 265-275, 2014 | 9 | 2014 |
| Statistical evaluation of elemental composition data of PM10 air particulate in Sofia B Veleva, E Hristova, E Nikolova, M Kolarova, R Valcheva International Journal of Environment and Pollution 57 (3-4), 175-188, 2015 | 8 | 2015 |
| Heavy metal content and element composition of plankton and fish from Iskar Reservoir and its ecotone G Raikova-Petrova, M Stefanova, D Kozuharov, R Vаlcheva, D Rozdina, ... Ecological Engineering and Environment Protection 9, 22-31, 2017 | 5 | 2017 |
| Experimental study on elemental composition of PM10 in Sofia, 2012–2014 B Veleva, E Hristova, E Nikolova, M Kolarova, R Valcheva Sci. Technol, 2015 | 5 | 2015 |
| X-Ray Fit-Windows based Program for Energy Dispersive X-Ray Fluorescent Analysis, EXRS 2006 E Nikolova, R Valcheva European Conference on X-Ray Spectrometry, Paris, France, 2006 | 5 | 2006 |
| X-Ray Fit–Windows Based Program for Energy Dispersive X-Ray–Fluorescent Analysis R Valcheva, E Nikolova, K Stoev XX-th International Symposium on Nuclear Electronics and Computing, Bulgaria …, 2005 | 1 | 2005 |
| X-ray fluorescent analysis of marine sediments from Port Burgas and Burgas Bay Aquatory E Nikolova, R Valcheva Dokladi na BYaD 16 (2), 30-33, 2011 | | 2011 |
| Calibration procedures for determination of elemental concentration in air particulate matter, using EDXRF Techniques E Nikolova, R Valcheva, BS Veleva, L Samek, N Civici, I Beslic, E Hristova, ... | | |
