Velev, Valentin, Nina Arhangelova, Daniela Nedeva, Zhenya Stoyanova, and Anton Popov. 2023. “HEAT – MECHANICALLY INDUCED STRUCTURE DEVELOPMENT IN PARTIALLY CRYSTALLINE POLYESTER FIBERS. INFLUENCE OF THE MECHANICAL STRESS: HEAT – MECHANICALLY INDUCED STRUCTURE DEVELOPMENT IN PARTIALLY CRYSTALLINE POLYESTER FIBERS. INFLUENCE OF THE MECHANICAL STRESS”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 13 (1):52-57. https://doi.org/10.46687/jsar.v13i1.239.