@article{oai:nagoya.repo.nii.ac.jp:00031378,
 author = {Okuda, Takayoshi and Yamamoto, Kenzo},
 journal = {Memoirs of the Faculty of Engineering, Nagoya University},
 month = {Mar},
 note = {An estimation of penetrating voltage is made for negative probe in high pressure plasma with aid of the sheath criterion. The penetration may be a major source of errors appearing in the probe measurement.},
 pages = {179--181},
 title = {Penetration of ion sheath into plasma},
 volume = {14},
 year = {1963}
}