EXISTENCE OF CLASSICAL WEAKENED SOLUTION ON THE AXIS OF THIRD CENTRALLY SYMMETRIC MIXED PROBLEM FOR SECOND ORDER HOMOGENEOUS THREE-DIMENSIONAL GENERAL HYPERBOLIC EQUATION. FEJDS [Internet]. 2025 Sep. 29 [cited 2026 Jan. 5];39(1):1-22. Available from: https://pphmjopenaccess.com/fejds/article/view/3949