Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sakama Hiroki and Takahashi Takehiko,Reduction measures of human body touch/step voltage by using silicon coated gravel,The Journal of the Institute of Electrical Installation Engineers of Japan,09100350,The Institute of Electrical Installation Engineers of Japan,2007,27,8,679-684,https://cir.nii.ac.jp/crid/1390282680721250688,https://doi.org/10.14936/ieiej.27.679