DNYANESHWAR M. CHOPADE, ASHWIN J.KHATKALE, SWAPNIL H. HAWALE, SAGAR S. VHANAMANE, GANESH R. DHYAGUDE, PROF.JITESH K. ROMAN. REVIEW ON ADVANCES IN MANUFACTURING “ 4D PRINTING .” Int. j. innov. eng. res. technol. 2021;8(1):6-9. Accessed January 29, 2026. https://repo.ijiert.org/index.php/ijiert/article/view/3