Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) ISHIZAKA Masaaki,In situ observations of weak layers caused by graupels and snow crystals in snow packs deposited in a controlled cold room,Journal of the Japanese Society of Snow and Ice,03731006,The Japanese Society of Snow and Ice,2007,69,4,481-488,https://cir.nii.ac.jp/crid/1390282681438599552,https://doi.org/10.5331/seppyo.69.481