List of Articles Variational problem Open Access Article Abstract Page Full-Text 1 - A Survey of Direct Methods for Solving Variational Problems Maryam Gholami Mohammad Norouzi Open Access Article Abstract Page Full-Text 2 - کاهش مرتبه، مو- تقارن و مو- قانون بقا معادله تعمیم یافته mKdV با ضرایب ثابت و متغیر. خدایار گودرزی 10.30495/ijim.2022.64041.1556 Open Access Article Abstract Page Full-Text 3 - Order Reduction and μ-Conservation Law for the Non-Isospectral KdV Type Equation a with Variable-Coefficients Khodayar Goodarzi