@article{oai:tsukuba.repo.nii.ac.jp:00015161,
 author = {Aoki, Hisashi and Matsukura, Yukinori and 松倉, 公憲},
 issue = {12},
 journal = {Earth Surface Processes and Landforms},
 month = {Mar},
 pages = {1759--1769},
 title = {A new technique for non-destructive field measurement of rock-surface strength: an application of the Equotip hardness tester to weathering studies},
 volume = {32},
 year = {2007}
}