Takano, B. (1987). "Correlation of Volcanic Activity with Sulfur Oxyanion Speciation in a Crater Lake". Science. ج. 235 ع. 4796: 1633–1635. DOI:10.1126/science.235.4796.1633. PMID:17795598.
nih.gov
pubmed.ncbi.nlm.nih.gov
Takano, B. (1987). "Correlation of Volcanic Activity with Sulfur Oxyanion Speciation in a Crater Lake". Science. ج. 235 ع. 4796: 1633–1635. DOI:10.1126/science.235.4796.1633. PMID:17795598.