Baraloto, C.; Forget, P.-M. (2007), „Seed size, seedling morphology, and response to deep shade and damage in neotropical rain forest trees”, American Journal of Botany94 (6): 901-11, DOI:10.3732/ajb.94.6.901, PMID21636459
fs.fed.us
treesearch.fs.fed.us
Charles R. Tischler; Justin D. Derner; H. Wayne Polley; Hyrum B. Johnson, Response of Seedlings of Two Hypogeal Brush Species to CO2 Enrichment, Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, pp. 104-106, arhivirano iz originala na datum 2011-09-28, pristupljeno 2019-01-03
nih.gov
ncbi.nlm.nih.gov
Baraloto, C.; Forget, P.-M. (2007), „Seed size, seedling morphology, and response to deep shade and damage in neotropical rain forest trees”, American Journal of Botany94 (6): 901-11, DOI:10.3732/ajb.94.6.901, PMID21636459
web.archive.org
Charles R. Tischler; Justin D. Derner; H. Wayne Polley; Hyrum B. Johnson, Response of Seedlings of Two Hypogeal Brush Species to CO2 Enrichment, Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, pp. 104-106, arhivirano iz originala na datum 2011-09-28, pristupljeno 2019-01-03