| Technological scheme for copper slag processing S Gyurov, N Marinkov, Y Kostova, D Rabadjieva, D Kovacheva, ... International Journal of Mineral Processing 158, 1-7, 2017 | 36 | 2017 |
| Glass transition temperatures and structures of multicomponent borate glasses: Influence of modifier cation field strengths T Vassilev, I Penkov, C Tzvetkova, R Pascova Journal of Non-Crystalline Solids 438, 1-6, 2016 | 24 | 2016 |
| Phytomining: New method for rhenium production O Bozhkov, C Tzvetkova, L Borisova, B Bryskin AM&P Technical Articles 170 (5), 34-37, 2012 | 14 | 2012 |
| Preparation and characterization of silicagel from silicate solution obtained by autoclave treatment of copper slag G 15. Marinkov, N., Markova-Velichkova, M., Gyurov, S., Kostova, Y ... Journal of Sol-Gel Science and Technology 87 (2), 331-339, 2018 | 12 | 2018 |
| DIATOMITE/CARBON ADSORBENT FOR PHENOL REMOVAL. PG Tzvetkova, RN Nickolov, CT Tzvetkova, OD Bozhkov, DK Voykova Journal of Chemical Technology & Metallurgy 51 (2), 2016 | 11 | 2016 |
| Advantages of rhenium phytomining by lucerne and clover from ore dressing soils O Bozhkov, C Tzvetkova 7th WSEAS international conference on environment, ecosystems and …, 2009 | 10 | 2009 |
| On the uptake of rhenium by plants: Accumulation and recovery from plant tissue C Tzvetkova, LAB Novo, S Atanasova-Vladimirova, T Vassilev Journal of Cleaner Production 328, 129534, 2021 | 9* | 2021 |
| An approach to rhenium phytorecovery from soils and waters in ore dressing regions of Bulgaria O Bozhkov, C Tzvetkova, T Blagoeva Proc. WSEAS Intl. Conf. on Waste Management, Water Pollution, Air Pollution …, 2008 | 8 | 2008 |
| Plant Biosphere-Natural Extractor and Concentrator of Rhenium from Soils and Waters O Bozhkov, C Tzvetkova, T Blagoeva Proc. WSEAS Intl. Conf. on Waste Menagement, Water Polution, Air Pollution …, 2007 | 7 | 2007 |
| Double Salts in the SystemsMe+ X–Me2+ X2–H2O (Me+= K, NH4, Rb, Cs; Me2+= Mn, Co, Ni; X−= Cl, Br) S Tepavitcharova, C Balarew, C Tzvetkova, O Angelova Journal of Solid State Chemistry 143 (1), 16-23, 1999 | 7 | 1999 |
| Study of rhenium phytoaccumulation in white clover (Trifolium repens) and water fern (Salvinia natans L.) C Tzvetkova, O Bozhkov 7th WSEAS. International Conference on Environment, Ecosystems and …, 2009 | 6 | 2009 |
| The Double SaltsMe+ Br· Me2+ Br2· 6H2O (Me+= K, NH4, Rb; Me2+= Co, Ni) J Macicek, C Balarew, C Tzvetkova, O Angelova Journal of Solid State Chemistry 129 (2), 200-205, 1997 | 6 | 1997 |
| Kinetics of relaxation and crystallization of sodium metaphosphate glass I Avramov, C Tzvetkova, T Vassilev Journal of Non-Crystalline Solids 355 (1), 23-28, 2009 | 4 | 2009 |
| Correlation between chemical characteristics and optical spectra of Spirulina commercially available on the Bulgarian market K Nikolova, T Eftimov, A Pashev, M Karadjov, C Tzvetkova, G Gentscheva, ... Journal of the Turkish Chemical Society Section A: Chemistry 10 (2), 465-474, 2023 | 3 | 2023 |
| Study of the possibility of rhenium extraction and preconcentration from plants C Tzvetkova, O Bozhkov, E Russeva Proc. 1st Intl. Conf. on Waste Management, Water Pollution, Air Pollution …, 2007 | 3 | 2007 |
| Distribution and Determination of Pb, Cd, Bi and Cu in the Sea Brine System: Solution‐Colloidal Particles–Biota O Bozhkov, C Tzvetkova, E Russeva Annali di Chimica: Journal of Analytical, Environmental and Cultural …, 2006 | 3 | 2006 |
| Mineral content and some optical properties of aloe vera juice G Gentscheva, S Minkova, C Tzvetkova, A Bozhinova, K Nikolova Scripta Scientifica Pharmaceutica 9 (1), 35-39, 2022 | 2 | 2022 |
| Assessment of the elemental composition, antioxidant activity, and optical properties of non-traditional Bulgarian fruit wines S Minkova, I Vlaeva, K Nikolova, N Petkova, G Gentscheva, C Tzvetkova Bulg. Chem. Commun 54, 26-30, 2022 | 2 | 2022 |
| Phytomining of Rhenium-an Alternative Method for Rhenium production O Bozhkov, C Tzvetkova, L Borisova BOOK OF PROCEEDINGS, 223, 2011 | 2 | 2011 |
| Study of Rhenium Bioaccumulation in Lucerne (Medicago) and its Extraction from Plants and Purification from Main Ash Elements C Tzvetkova, O Bozhkov Proc. 2nd Intl. Conf. on Waste Management, Water Pollution, Air Pollution …, 2008 | 2 | 2008 |
