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Wilcoxson, Roy D. (1996). "Helen Hart, Remarkable Plant Pathologist (1900–1971)". Annual Review of Phytopathology. 34. annualreviews.org: 13–23. doi:10.1146/annurev.phyto.34.1.13. PMID15012531.
nih.gov
pubmed.ncbi.nlm.nih.gov
Wilcoxson, Roy D. (1996). "Helen Hart, Remarkable Plant Pathologist (1900–1971)". Annual Review of Phytopathology. 34. annualreviews.org: 13–23. doi:10.1146/annurev.phyto.34.1.13. PMID15012531.