00362nas a2200121   4500000000100000000000100001008004100002260004400043100001500087700001800102700002000120245010000140       2013                            d  c28-29 Sept. 2013bIEEEaBali, Indonesia1 aEdit Prima1 aYudho Sucahyo1 aZainal Hasibuan00aMapping the certification authority for e-government procurement system into eGovAMAN framework