1. Construction and operation of a simple microspectrophotometer (cytophotometer) for visible light;Sandritter;Z. Wiss. Mikrosk.,1958
2. High speed automatic blood cell counter and cell size analyzer;Coulter;Proc. Natl. Electron. Conf.,1956
3. Measurement of activity of single molecules of beta-d-galactosidase;Rotman;Proc. Natl. Acad. Sci. U.S.A.,1961
4. Impulszytometrie bei einzelzellen in suspension;Dittrich;Z. Naturforsch.,1969