@article{Nobuo GESHI2018127.107, title={Introduction to the Special Issue “Progress of Studies on Caldera-forming Eruptions and Future Problems”}, author={Nobuo GESHI and Mitsuhiro NAKAGAWA}, journal={Journal of Geography (Chigaku Zasshi)}, volume={127}, number={2}, pages={107-109}, year={2018}, doi={10.5026/jgeography.127.107} }