Bada, J. L. and Miller, S. L.: 1968,Science159, 423. Google Scholar
Bar-Nun, A., Bar-Nun, N., Bauer, S. H., and Sagan, C.: 1970,Science168, 470. Google Scholar
Cohen, I. R. and Altshuller, A. P.: 1961,Ann. Chem.33, 726. Google Scholar
Cronin, J. R. and Moore, C. B.: 1971,Science172, 1327. Google Scholar
Czuchajowski, L. and Zawadzki, W.: 1968,Rocz. Chem.42, 697. Google Scholar
Dowler, M. J., Fuller, W. D., Orgel, L. E., and Sanchez, R. A.: 1970,Science169, 1320. Google Scholar
Dus, K., Lindroth, S., Pabst, R., and Smith, R. A.: 1967,Ann. Biochem.18, 532. Google Scholar
Grossenbacher, K. A. and Knight, C. A.: 1965, in S. W. Fox (ed.),The Origins of Prebiological Systems, Academic Press, New York, pp. 173–183. Google Scholar
Friedmann, N., Haverland, W. J., and Miller, S. L.: 1971, in R. Buvet and C. Ponnamperuma (eds.),Chemical Evolution and the Origin of Life, North Holland Publ. Co., Amsterdam, pp. 123–135. Google Scholar
Friedmann N. and Miller, S. L.: 1969,Science,166, 766. Google Scholar
Harada, K. and Fox, S. W.: 1964,Nature201, 335. Google Scholar
Khare, B. N. and Sagan, C.: 1971,Nature232, 577. Google Scholar
Kvenvolden, K., Lawless, J., Pering, K., Peterson, E., Flores, J., Ponnamperuma, C., Kaplan, I. R., and Moore, C.: 1970,Nature228, 923. Google Scholar
Kvenvolden, K. A., Lawless, J. G., and Ponnamperuma, C.: 1971,Proc. Nat. Acad. Sci. U.S.A.68 486. Google Scholar
Oró, J.: 1968,J. Brit. Interplanetary Soc.21, 12. Google Scholar
Oró, J., Gilbert, J., Lichtenstein, H., Wickstrom, S., and Flory, D. A.: 1971,Nature230, 105. Google Scholar
Pollock, G. E. and Oyama, V. I.: 1966,J. Gas Chromatogr.4, 126. Google Scholar
Ponnamperuma, C., Woeller, F., Flores, J., Romiez, M., and Allen, W.: 1969, in R. F. Gould (ed.),Chemical Reactions in Electric Discharges (Advances in Chemistry, series no. 80, A.C.S., Washington), pp. 280–288. Google Scholar
Ring, D., Wolman, Y., Friedmann N., and Miller, S. L.: 1972,Proc. Nat. Acad. Sci. U.S.A.69, 765. Google Scholar
Sagan, C. and Khare, B. N.: 1971,Science173, 417. Google Scholar
Sanchez, R. A., Ferris, J. P., and Orgel, L. E.: 1966,Science154, 784. Google Scholar