Basher، Reid (15 أغسطس 2006). "Global early warning systems for natural hazards: systematic and people-centered". Philosophical Transactions of the Royal Society. ج. 364 ع. 1845: 2167–2182. Bibcode:2006RSPTA.364.2167B. DOI:10.1098/rsta.2006.1819. PMID:16844654.
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Basher، Reid (15 أغسطس 2006). "Global early warning systems for natural hazards: systematic and people-centered". Philosophical Transactions of the Royal Society. ج. 364 ع. 1845: 2167–2182. Bibcode:2006RSPTA.364.2167B. DOI:10.1098/rsta.2006.1819. PMID:16844654.
Basher، Reid (15 أغسطس 2006). "Global early warning systems for natural hazards: systematic and people-centered". Philosophical Transactions of the Royal Society. ج. 364 ع. 1845: 2167–2182. Bibcode:2006RSPTA.364.2167B. DOI:10.1098/rsta.2006.1819. PMID:16844654.