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- [4] THE THEORY OF THE PHOTOINDUCED REFRACTIVE-INDEX VARIATION IN FERROELECTRICS UKRAINSKII FIZICHESKII ZHURNAL, 1982, 27 (03): : 344 - 349
- [6] Formation of refractive-index gratings in germanosilicate fibres by near-UV radiation Geologiya Rudnykh Mestorozhdenij, 1996, 383 (60-11): : 160 - 163