Nienartowicz, A., Filbrandt-Czaja, A., Piernik, A., Jabłoński, P., Kunz, M. and Deptuła, M. 2013. Modern pollen rain in heathlands and adjacent forest phytocoenoses in Northern and Central Poland. Ecological Questions. 15, 1 (Oct. 2013), 127–151. DOI:https://doi.org/10.12775/v10090-011-0044-1.