Name Irfan Nurhidayat Affiliation پژوهشگر در خارج از ایران Degree _ Website Email — JournalPaper Presentation FinishedProject Book Thesis Speech Innovation ResearchExcellence Sabbatical TheorizingChair GrantAttraction WorkShop Membership JournalPublication ExecutiveActivity TitleJournal 1 Approximate solutions of the Helmholtz equation on the plane Engineering Applications (ENAP)