First survey of the vascular and cryptogam flora on Bulgaria's ancient mounds.

Apostolova, I., Sopotlieva, D., Valcheva, M., Ganeva, A., Shivarov, V., Velev, N., Vassilev, K., Terziyska, T., Nekhrizov, G., (2022). Plants 11(5) MDPI AG, Basel, Switzerland. English language

Alien plant invasion hotspots and invasion debt in European woodlands.

Wagner, V., Večeřa, M., Jiménez-Alfaro, B., Pergl, J., Lenoir, J., Svenning, J. C., Pyšek, P., Agrillo, E., Biurrun, I., Campos, J. A., Ewald, J., Fernández-González, F., Jandt, U., Rašomavičius, V., Šilc, U., Škvorc, Ž., Vassilev, K., Wohlgemuth, T., Chytrý, M., (2021). Journal of Vegetation Science 32(2) Wiley, Oxford, UK. English language

Neophyte invasions in European grasslands.

Axmanová, I., Kalusová, V., Danihelka, J., Dengler, J., Pergl, J., Petr Pyšek, M. V., Attorre, F., Biurrun, I., Boch, S., Conradi, T., Gavilán, R. G., Jiménez-Alfaro, B., Knollová, I., Kuzemko, A., Lenoir, J., Leostrin, A., Medvecká, J., Moeslund, J. E., Obratov-Petkovic, D., Svenning, J. C., Tsiripidis, I., Vassilev, K., Chytrý, M., (2021). Journal of Vegetation Science 32(2) Wiley, Oxford, UK. English language

Dimensions of invasiveness: links between local abundance, geographic range size, and habitat breadth in Europe's alien and native floras.

Fristoe, T. S., Chytrý, M., Dawson, W., Essl, F., Heleno, R., Kreft, H., Maurel, N., Pergl, J., Pyšek, P., Seebens, H., Weigelt, P., Vargas, P., Yang Qiang, Attorre, F., Bergmeier, E., Bernhardt-Römermann, M., Biurrun, I., Boch, S., Bonari, G., Botta-Dukát, Z., Bruun, H. H., Byun ChaeHo, Čarni, A., Carranza, M. L., Catford, J. A., Cerabolini, B. E. L., Chacón-Madrigal, E., Ciccarelli, D., Cušterevska, R., Ronde, I. de, Dengler, J., Golub, V., Haveman, R., Hough-Snee, N., Jandt, U., Jansen, F., Kuzemko, A., Küzmič, F., Lenoir, J., Macanović, A., Marcenò, C., Martin, A. R., Michaletz, S. T., Mori, A. S., Niinemets, Ü., Peterka, T., Pielech, R., Rašomavičius, V., Rūsiņa, S., Dias, A. S., Šibíková, M., Šilc, U., Stanisci, A., Jansen, S., Svenning, J. C., Swacha, G., Plas, F. van der, Vassilev, K., Kleunen, M. van, (2021). Proceedings of the National Academy of Sciences of the United States of America 118(22) National Academy of Sciences, Washington DC, USA. English language

Alien plant invasions in European woodlands.

Wagner, V., Chytrý, M., Jiménez-Alfaro, B., Pergl, J., Hennekens, S., Biurrun, I., Knollová, I., Berg, C., Vassilev, K., Rodwell, J. S., Škvorc, Ž., Jandt, U., Ewald, J., Jansen, F., Tsiripidis, I., Botta-Dukát, Z., Casella, L., Attorre, F., Rašomavičius, V., Ćušterevska, R., Schaminée, J. H. J., Brunet, J., Lenoir, J., Svenning, J. C., Kącki, Z., Petrášová-Šibíková, M. (et al), (2017). Diversity and Distributions 23(9), 969-981. Wiley, Oxford, UK. English language

The contradiction between taxa of conservation significance and invasive species - a case study of sustainable development in Mala Planina.

Grigorov, B., Vassilev, K., Velev, N., Assenov, A., (2016). European Journal of Sustainable Development 5(4), 464-474. European Center of Sustainable Development, Rome, Italy. English language