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- [2] BIREFRINGENCE OF FORM IN SPHEROLITES + STRETCHED POLYPROPYLENE FILMS DOKLADY AKADEMII NAUK SSSR, 1964, 155 (03): : 666 - &
- [3] Effect of γ-radiation on the birefringence of stretched polyethylene films OPTICS AND LASER TECHNOLOGY, 2004, 36 (05): : 361 - 364