Chojnacka, J., Cyzman, W., Nienartowicz, A., & Deptuła, M. (2010). Variability of the structure and directions in the development of heaths and psammophilous grasslands within the artillery range near the city of Toruń. Ecological Questions, 12, 89–129. https://doi.org/10.12775/v10090-010-0006-z