Adriaans, B (1988). "Tropical ulcer - a reapprisal of recent work". Transactions of the Royal Society of Tropical Medicine and Hygiene. 82 (2): 185–189. doi:10.1016/0035-9203(88)90402-6. PMID3055448.
nih.gov
pubmed.ncbi.nlm.nih.gov
Adriaans, B (1988). "Tropical ulcer - a reapprisal of recent work". Transactions of the Royal Society of Tropical Medicine and Hygiene. 82 (2): 185–189. doi:10.1016/0035-9203(88)90402-6. PMID3055448.