THE FIELD-INDUCED SQUARE GRID PERTURBATION IN THE PLANAR TEXTURE OF CHOLESTERIC LIQUID CRYSTALS M. DE ZWART et C. Z. VAN DOORNJ. Phys. Colloques, 40 C3 (1979) C3-278-C3-284DOI: https://doi.org/10.1051/jphyscol:1979353
