Shekhar H. Design of Funnel Port Tubular Propellant Grain for Neutral Burning Profile in Rockets. Def. Sc. J. [Internet]. 2009 Sep. 1 [cited 2025 Jun. 15];59(5):494-8. Available from: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/1550