Bardal, S., and P.J. Wells. “Intensity-Dependent Shift of Phasematched Wavelength in Second-Harmonic Generation in Optical Fibres”. Electronics Letters, vol. 27, no. 11, 1991, pp. 896-7, https://doi.org/10.1049/el:19910561.
Bardal, S., & Wells, P. (1991). Intensity-dependent shift of phasematched wavelength in second-harmonic generation in optical fibres. Electronics Letters, 27(11), 896-897. https://doi.org/10.1049/el:19910561
Bardal S, Wells P. Intensity-dependent shift of phasematched wavelength in second-harmonic generation in optical fibres. Electronics Letters. 1991;27(11):896-7.