1. Reiner, E., Nature, 206, 1272 (1965).
2. Reiner, E., J. Gas Chromat., 5, 65 (1967).
3. Ewing, W. H., Pub. Health Surv. Publ. No. 734 (US Gov. Print. Off., Washington, DC, 1960, rev. 1962).
4. Edwards, P. R., and Ewing, W. H., in Identification of Enterobacteriaceae (second ed.) (Burgess Publishing Co., Minneapolis, Minn., 1962).
5. Kauffmann, F., J. Immunol., 57, 71 (1947).