Velev, Valentin, Anton Popov, Nina Arhangelova, Pencho Kyurkchiev, Hristo Hristov, Michele Bello, Giuliano Moschini, and Nikolay Uzunov. 2023. “EFFECT OF PROTON IRRADIATION ON THE STRUCTURE DEVELOPMENT OF POLYETHYLENE TEREPHTHALATE FIBERS: EFFECT OF PROTON IRRADIATION ON THE STRUCTURE DEVELOPMENT OF POLYETHYLENE TEREPHTHALATE FIBERS”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 6 (1):174-78. https://doi.org/10.46687/jsar.v6i1.155.