Putz, Francis E.; Redford, Kent H. (September 14, 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.
Putz, Francis E.; Redford, Kent H. (September 14, 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.