Pozhidaev, E.P. et al. 2011. Smectic nanostructures with typical size less than the visible light wavelength: physics and electro-optics. Photonics Letters of Poland. 3, 1 (Mar. 2011), pp. 11–13. DOI:https://doi.org/10.4302/photon. lett. pl.v3i1.189.