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Putz, Francis E.; Redford, Kent H. (14. september 2009). »The Importance of Defining 'Forest': Tropical Forest Degradation, Deforestation, Long-term Phase Shifts, and Further Transitions«. Biotropica. Wiley. 42 (1): 10–20. doi:10.1111/j.1744-7429.2009.00567.x. ISSN0006-3606.