Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TANAKA Yoshiaki and OKA Masaru and YOSHIDA Chikashi and KONDO Koji and HAMAMOTO Takamitsu,Dynamic operation model for log transportation by forwarders,Journal of The Japan Forest Engineering Society,13423134,The Japan Forest Engineering Society,2007,21,4,287-290,https://cir.nii.ac.jp/crid/1390001204465341312,https://doi.org/10.18945/jjfes.kj00007485544