Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KOMATSU Hiroaki and KOSAKA Hideo,"K-Ar ages of the Enrei Formation distributed in Yokokawagawa area, Okaya City, Nagano Prefecture, central Japan",Earth Science (Chikyu Kagaku),03666611,The Association for the Geological Collaboration in Japan,2006,60,5,431-435,https://cir.nii.ac.jp/crid/1390282679242430080,https://doi.org/10.15080/agcjchikyukagaku.60.5_431