Jaca, J., Rodríguez, N., Nogales, M., Traveset, A., (2019). Biological Invasions 21(10), 3203-3219. Springer, Amsterdam, Netherlands. English language
Pavisse, R., Vangeluwe, D., Clergeau, P., (2019). Ardea 107(1), 103-109. Nederlandse Ornithologische Unie (Netherlands Ornithologists' Union), Arnhem, Netherlands. English language
Pons, P., Bas, J. M., Estany-Tigerström, D., (2010). Biodiversity and Conservation 19(6), 1711-1723. Springer, Amsterdam, The Netherlands. English language
Rajchard, J., Rachač, V., (2001). Veterinární Medicína 46(3), 78-79. Czech Academy of Agricultural Sciences, Praha, Czech Republic. English language