1. Bulkin BJ, Grunbaum D, Santoro AV (1969) Vibrational Spectra of Liquid Crystals I. Changes in the Infrared Spectrum at the Crystal-Nematic Transition. J Chem Phys 51 (4): 1602
2. Butler JS, Sedman J (1988) Polarized FT-IR Spectra of Transition Metal Carbonyl Complexes Oriented in Nematic Liquid Crystal Solvents. Applied Spectr 42 (3): 497
3. Caesar GP, Levenson RA, Gray HB (1969) Polarized IR Spectroscopy of Molecules Oriented in a Nematic Liquid Crystal. Application to Mn2(CO)10 and Re2(CO). J. Amer Chem Soc 91 (3): 773
4. Diehl P (1969) NMR Grundlagen und Fortschritte, vol 1. Springer, Berlin, p 23
5. Diehl P, Khetrapal CL (1969) NMR Basic Principles and Progress, vol 1. Springer, Berlin