Approach

Direct-method treatment of pseudo symmetry

        Pseudo symmetry is due to the symmetry of a partial structure being higher than that of the whole structure. There are two categories of pseudo symmetry [1]:

References

        [1] Fan Hai-fu & Zheng Qi-tai (1982) Acta Phys Sin. 31 191-198. PDF file (In Chinese with English abstract)
        [2] Fan Hai-fu (1965) Acta Phys. Sin. 21, 1105-1114. PDF file (In Chinese with English abstract)
        [3] Fan Hai-fu (1975) Acta Phys. Sin. 24, 57-60. PDF file (In Chinese)
        [4] Fan Hai-fu, He Luo, Qian Jin-zi & Liu Shi-xiang (1978) Acta Phys. Sin. 27, 554-558. PDF file(In Chinese with English abstract)
        [5] Fan Hai-fu (1984) The Rigaku Journal vol. 1, no. 2, 15-21. PDF file
        [6] Fan Hai-fu (1965) Acta Phys. Sin. 21, 114-1118. PDF file (In Chinese with English abstract)
        [7] Fan Hai-fu & Zheng Qi-tai, (1978) Acta Phys. Sin. 27, 169-174. PDF file (In Chinese with English abstract)