Hwang Y-H, Chiang C-H. Tracking Methods to Study the Surface Regression of the Solid-Propellant Grain. Int. j. eng. technol. innov. [Internet]. 2014 Oct. 1 [cited 2024 May 1];4(4):213-22. Available from: https://ojs.imeti.org/index.php/IJETI/article/view/144