1. Amies, C. R.: The elementary bodies of zoster and their serological relationship to those of varicella. Brit. J. exp. Path. 15, 314 (1934).
2. Andrewes, C. H., F. B. Bang, R. M. Cahanock, and V. M. Zhdanov: Parainfluenzaviruses 1, 2 and 3: Suggested names for re- cently described myxoviruses. Virology 8, 129 (1959).
3. Andrewes, C. H., D. M. Charproniere, A. E. Compels, H. G. Pereira, and A. T. Roden: Propagation of common cold virus in tissue cultures. Lancet 1953 II, 546.
4. Bendict, A. A., and E. O’Brien: Antigenic studies on the psittacosis-lymphogranuloma group of viruses. II. Characterisation of complement-fixing antigens extracted with sodium lauryl sulfate. J. Immunol. 76, 293 (1956).
5. — R. L. Tips, and D. Eddy: Antigenic studies on the psittacosis-lymphogranuloma group of viruses. I. Acid-soluble complement fixing and skin test antigens. Tex. Rep. Biol. Med. 13, 206 (1955).