1. L.G. Fel, Phys. Rev. E 52, 702 (1995)
2. L.G. Fel, Phys. Rev. E 52, 2692 (1995)
3. For a helpful and concise overview of tetrahedral structures and symmetries see: Wikipedia http://en.wikipedia. org/wiki/Tetrahedron
4. M. Tinkham, Group Theory and Quantum Mechanics (McGraw Hill, New York, 1964)
5. Throughout the present paper we focus on the nonchiral tetrahedratic phase, $T_{d}$, made up by achiral molecules