Hydrogen
      Vindryevsky B A, Ishmaev S N, Sadikov I P, Chernyshev A A
      Physics Letters 76A (1980) 355-358
      Neutron diffraction studies of solid parahydrogen at pressures up to 5 kbar
      Locality: synthetic
      Sample: P = .3 GPa, T = 16.6 K
      _database_code_amcsd 0015298

      CELL PARAMETERS:    3.3080   3.3080   5.3770   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     50.957
      Density (g/cm3):      0.066
      MAX. ABS. INTENSITY / VOLUME**2:     0.5718745328E-01
      RIR:      0.283
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                31.22         29.55        2.8648    1   0   0         6
                33.33         29.67        2.6885    0   0   2         2
                35.51        100.00        2.5283    1   0   1        12
                46.31          8.45        1.9604    1   0   2        12
                55.56          5.66        1.6540    1   1   0         6
                60.98          4.67        1.5195    1   0   3        12
                66.36          3.55        1.4088    1   1   2        12
                67.69          2.33        1.3841    2   0   1        12
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.