1. Evolutionary paradoxes and natural nonselection;Bains;TIBS,1987
2. The problem of stages in biopoesis;Bernai,1959
3. Binding of peptides that are specified by complementary RNAs;Blalock;Biochem. J.,1986
4. Comparative evolution with special reference to primitive mechanisms;Boyden;Evolution,1953
5. The chemistry of self-splicing RNA and RNA enzymes;Cech;Science,1987