http://itsys.hansung.ac.kr/cgi-bin/kplus/board/include/DOWNLOAD.php3?table=prj_GVKwithKHJ&l=9-170716&inc=local&f=upfile&p=215 http://vixra.org/pdf/1711.0265v2.pdf
http://itsys.hansung.ac.kr/cgi-bin/kplus/board/include/DOWNLOAD.php3?table=prj_GVKwithKHJ&l=9-170716&inc=local&f=upfile&p=215
http://vixra.org/pdf/1711.0265v2.pdf