INVESTIGATION OF VARIABLES GEOMETRY OF NOVEL PIN CORE-SANDWICH STRUCTURE ON UNSATURATED POLYESTER FLEXTURAL PROPERTIES. IQJMME [Internet]. 2023 Jun. 25 [cited 2026 Apr. 16];22(3):1-12. Available from: https://mail.iqjfmme.com/index.php/jmme/article/view/624