Blong, Russell James, Felix Riede, and Qianyang Chen. 2018. “A Fuzzy Logic Methodology for Assessing the Resilience of past Communities to Tephra Fall: A Laacher See Eruption 13,000 Year BP Case”. Volcanica 1 (1):63-84. https://doi.org/10.30909/vol.01.01.6384.