Wiejak, J., L. Surmacz, and E. Wyroba. “Effect of Wortmannin and Phorbol Ester on Paramecium Fluid-Phase Uptake in the Presence of Transferrin”. European Journal of Histochemistry, vol. 45, no. 4, Dec. 2009, pp. 383-8, doi:10.4081/1647.