1. F. Challenger, Chem. Rev. 36, 315–361 (1945).
2. F. Challenger, in Organometals and Organometalloids, ACS Symp., Ser. 82, (F. E. Brinckman and J. M. Bellama, eds.), American Chemical Society, Washington, D.C., 1978, pp. 1–22.
3. J. M. Wood, Science 183, 1049–1052 (1974).
4. M. O. Andreae, Limnol. Oceanogr. 24, 440–452 (1979).
5. C. -N. Cheng and D. D. Focht, Appl. Environ. Microbiol. 38, 494–498 (1979).