Interview with Bernard Chouet regarding his research into long-period events and volcanic eruptions: "Essential Science Indicators". مؤرشف من الأصل في 2009-02-01. اطلع عليه بتاريخ 2009-02-18. .
Interview with Bernard Chouet regarding his research into long-period events and volcanic eruptions: "Essential Science Indicators". مؤرشف من الأصل في 2009-02-01. اطلع عليه بتاريخ 2009-02-18. .