Source: http://www.univ-bejaia.dz/jspui/bitstream/123456789/8772/1/Param%C3%A8tres%20influent%20sur%20le%20d%C3%A9pot%20de%20charge%20%C3%A9lectrique%20par%20effet%20couronne%20sur%20une%20surface%20d%27un%20di%C3%A9lectrique..pdf