1.The measurement of molecular orientation in polymers by spectroscopic techniques IM Ward - J. Polym. Sci. Polym. Symp., 1977 2.Interference Microscopy of Polymer Fibers M Pluta - J. Microsc, 1972 3.一本图书 Interferometry of Fibrous Materials N Barakat, AA Hamza - 1990 - books.google.com 4.Document title Opto-thermal properties of fibers 10. Average orientation determination from optical birefringence for annealed nylon 6 Auteur(s) / Author(s) FOUDA I. M. (1) ; Affiliation(s) Physics Department of Science, Mansoura University, Mansoura, EGYPTE