Pádua, Antônio Braz de, and Jorge Dias de Deus. “Analysis of the Eikonal in Pion-Proton Elastic Collisions at High Energies”. Semina: Ciências Exatas e Tecnológicas 16, no. 4 (December 15, 2004): 516–528. Accessed December 23, 2024. https://ojs.uel.br/revistas/uel/index.php/semexatas/article/view/3127.