1. Lambert R. A.: 1912. The production of foreign body giant cells in vitro. J. Exp. Med. 15: 510–515.
2. Lewis W. H.: 1927. The formation of giant cells in tissue culture and their similarity to those in tuberculosis lesion. Am. Rev. Tuberc. 15: 616–628.
3. Harris H.: 1970. Cell Fusion. The Dunham Lectures. Oxford University Press. London and New York.
4. Ringertz N. R. and Savage R. E.: 1976. Cell Hybrids. Academic, New York.
5. Barski G., Sorieul S., and Cornefert F.: 1960. Production dans des cultures in vitro de deux souches cellulaires en association de cellules de caractere ‘hybride’. Compt. Rend. Acad. Sc. 251: 1825–1827.