S. Wingren, T. Hatschek, O. Starl, B. Boeryd, and B. Nordenskjould, “Comparison of Static and Flow Cytofluorometry for Estimation of Dna Index and S-Phase Fraction in Fresh and Paraffin-Embedded Breast Carcinoma Tissue”, AO, vol. 27, no. 6, pp. 793–797, Jan. 1988.