Crystallography Laboratory University of Nijmegen

**PREFACE**
Smits, J.M.M.; Behm, H.; Bosman, W.P.; Beurskens, P.T.
J. Crystallogr. Spectrosc. Res. 1988, 18, 447.

**EXPRESS**
Enraf-Nonius EXPRESS. Enraf-Nonius diffractometer control software Release 5.1; Enraf-Nonius: Delft, The Netherlands, 1994.

**PROFIEL-ANALYSE**
Grant, D.F.; Gabe, E.J. J. Appl. Crystallogr. 1978, 11, 114.
Lehman, M.S.; Larsen, F.K. Acta Crystallogr. 1974, A30, 580.

**EMPABS**
North, A.C.T.; Philips, D.C.; Mathews, F.S. Acta Crystallogr. 1968, A24, 351.

**CRUNCH**
Gelder, R. de; Graaff, R.A.G. de; Schenk, H. Acta Crystallogr. 1993, A49, 287.

**DIRDIF**
Beurskens, P.T.; Beurskens, G.; Bosman, W.P.; Gelder, R. de; Garcia-Granda, S.; Gould, R.O.; Israel, R.; Smits, J.M.M. DIRDIF-96. A computer program system for crystal structure determination by Patterson methods and direct methods applied to difference structure factors; Crystallography Laboratory, University of Nijmegen: The Netherlands, 1996.

**PATTERSON/ORIENT**
Beurskens, P.T.; Beurskens, G.; Strumpel, M.; Nordman, C.E. In Patterson and Pattersons; Glusker, J.P.; Patterson, B.K.; Rossi, M., Eds.; Clarendon Press: Oxford, 1987; p. 356.

**SHELXL-93**
Sheldrick, G.M. SHELXL-93. Program for the refinement of crystal structures; University of Gottingen: Germany, 1993.

**FLACK-PARAMETER**
Flack, H.D. Acta Crystallogr. 1983, A39, 876.

**DIFABS**
Walker, N; Stuart, D. Acta Crystallogr. 1983, A39, 158.

**INTERNATIONAL TABLES**
International Tables for X-ray Crystallography, Vol. IV; Kynoch Press: Birmingham, England, 1974.

**PLUTON**
Spek, A.L. PLUTON. A program for plotting molecular and crystal structures; University of Utrecht: The Netherlands, 1995.

**PLATON**
Spek, A.L. Acta Crystallogr. 1990, A46, C-34.

**PLATON-93/ORTEP**
Spek, A.L. PLATON-93. Program for display and analysis of crystal and molecular structures; University of Utrecht: The Netherlands, 1995.

**GEOM**
Motherwell, W.D.S. GEOM. A program for geometrical calculations; Chemical Laboratory, University of Cambridge: England, 1976.

**PARST96**
Nardelli, M. Comput. Chem. 1983, 7, 95.
Nardelli, M. J. Appl. Crystallogr. 1995, 28, 659.

**Reduced (Niggli) Cell**
A Unified Algorithm for Determining the Reduced (Niggli) Cell.
Krivy, I. and Gruber, B. Acta Cryst. (1976). A32, 297-298.

**Unit Cell Comparison**
A Perturbation Stable Cell Comparison Technique.
Andrews, L.C., Bernstein, H.J. and Pelletier, G.A. Acta Cryst. (1980). A36, 248-252

**Bravais Lattice Invariants**
Bravais Lattice Invariants.
Andrews, L.C., Bernstein, H.J. Acta Cryst. (1995). A51, 413-416.

**Unit Cell Determination (Powder Indexing)**
Trial-and-error computer methods for the indexing of unknown powder patterns.
Werner,P.-E. Z. Kristallogr. (1964). 120, 375-387.

**TREOR: Unit Cell Determination (Powder Indexing)**
TREOR: a semi-exhaustive trial-and-error powder indexing program for all symmetries.
Werner,P.-E., Eriksson, L., Westdahl, M. J. Appl. Cryst. (1985). 18, 367-370.

**Unit Cell Determination (Powder Indexing)**
On the determination of unit-cell dimensions from powder diffraction patterns.
Wolff, P.M. de Acta Cryst. (1957). 10, 590-595.

**Structural Similarity**
Method of Crystal-Structure Similarity Searching
Dzyabchenko, A.V. Acta Cryst. (1994). B50, 414-425.

**Structural Similarity**
On Quantitative Relations among Crystal Structures
Burzlaff, H. and Rothammel, W. Acta Cryst. (1992). A48, 483-490.

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