1. Analysis of multilayered dielectric waveguides: variational treatment
2. Kendall, P.C.: ‘Rib and channel waveguides: generalised and vector equations, extension to wider range of claddings and structures, section 9.4’, Robson, P.N., Kendall, P.C., Rib waveguide theory by the spectral index method, (Research Studies Press and Wiley 1990)
3. Robson, P.N., Kendall, P.C., ‘Rib waveguide theory by the spectral index method’, (Research Studies Press and Wiley 1990)