Name hadi feyzollahzadeh Affiliation عضو یک سازمان غیر آموزشی یا پژوهشی داخلی Degree _ Website Email — JournalPaper Presentation Book Thesis Innovation Festival StandardCreation JournalPublication Speech Honor FinishedProject TitleJournal 1 Operational matrices of Chebyshev polynomials for solving singular Volterra integral equations Mathematical Sciences