1. A method for counting the viable cells in normal and malignant cell suspensions;Schrek;Amer. J. Cancer,1936
2. A rapid method for viable cell titration and clone production with HeLa cells in tissue culture: The use of X-irradiated cells to supply conditioning factors;Puck,1955
3. A comparison of methods for estimating the viable count of a suspension of tumour cells;Hoskins;Exp. Cell Res,1956
4. Counting actively metabolizing tissue cultured cells;Phillips;Exp. Cell Res,1957
5. Determination of cell viability;Hanks,1958