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2. CHEMAST: A computer program for modelling molecular structures;Barry;Computer Systems Laboratory, Washington University. Technical Memorandum No. 135,1971
3. Interactive Stereoscopic Computer Displays for Biomedical Research;Perkins;Comput. Biomed. Res.,1971
4. Ortep, a Fortran Thermal-ellipsoid plot program for crystal structure illustrations;Johnson,1965