Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Matsumoto Iwao and Fuchino Keiroku,A VISCOELASTIC APPROACH TO THE HEAT-TREATMENT OF THE DRAWN POLYPROPYLENE FILAMENTS,Sen'i Gakkaishi,00379875,"The Society of Fiber Science and Technology, Japan",1971,27,9,381-388,https://cir.nii.ac.jp/crid/1390282679840963456,https://doi.org/10.2115/fiber.27.381