FREEDERICKSZ TRANSITION IN PRETILTED NEMATIC CELLS IN THE MAGNETIC FIELD NORMAL TO THE DIRECTOR H. ONNAGAWA, M. KUWAHARA et K. MIYASHITAJ. Phys. Colloques, 40 C3 (1979) C3-519-C3-524DOI: https://doi.org/10.1051/jphyscol:19793104