INVERSE PROBLEM OF BRAGG'S SCATTERING FOR MEASURING THE SPECTRUM SURFACE ROUGHNESS IN THE OPTICAL GRADIENT WAVEGUIDE СтатьяGrishaeva N., Osovitsky A., Espinosa N., Cadena L., Vega C., Alvarez J.Proceedings of SPIE - The International Society for Optical Engineering. Том 10372. 2017.
