13228 Sultan Agalarov/James Williamson a.o.: Structure of the S15,S6,S18-rRNA complex - assembly of the 30S ribosome central domain. Science 7 April 2000, 107-112. S. Altman/M. Baer/C. Guerrier-Takada/A. Viogue: Enzymatic cleavage of RNA by RNA. Trends Biochem. Sci. 11 (1986), 515-518. D. Bartel/Jack Szostak: Isolation of new ribozymes from a large pool of random sequences. Science 261 (1993), 1411-1418. T. Cech: RNA as an enzyme. Scientific American 255/5 (1986), 64-75. T. Cech: Fishing for fresh catalysts. Nature 365 (1993), 204-205. Jan Cupal/S. Kopp/Peter Stadler: RNA shape space topology. Alife 1999, ... Sante Fe Inst. preprint 99-03-022. 13258 Jan Cupal/Peter Schuster/Peter Stadler: Topology in phenotype space. In Robert Giegerich a.o. (ed.): Computer science and biology. 1999, 9-15. T. Dandekar/M. Hentze: Finding the hairpin in the haystack - searching for RNA motifs. Trends. Genet. 11 (1995), 45-50. 9333 James Darnell: RNA. In 2900 Sgaramella, 17-28. A. Ellington/Jack Szostak: In vitro selection of RNA molecules that bind specific ligands. Nature 346 (1990), 818-822. W. Fontana/D. Konings/Peter Stadler/Peter Schuster: Statistics of RNA secondary structures. Biopolymers 33 (1993), 1389-1404. 11874 Walter Fontana/Peter Schuster: Continuity in evolution - on the nature of transitions. Science 29 May 1998, 1451-1455. To distinguish continuous from discontinuous evolutionary change, a relation of nearness between phenotypes is needed. W. Fontana/Peter Schuster: Shaping space - the possible and the attainable in RNA genotype-phenotype mapping. J. Theor. Biol. 194 (1998), 491-515. W. Fontana a.o.: Statistics of landscapes based on free energies, replication and degradation rate constants of RNA secondary structures. Monatsh. Chem. 122 (1991), 795-819. D. Gautheret/F. Major/R. Cedergren: Pattern searching/alignment with RNA primary and secondary structures - an effective descriptor for tRNA. Comp. Appl. Biosci. 6 (1990), 325-331. R. Gesteland/J. Atkins (ed.): The RNA world. Cold Spring Harbor Lab. 1993. W. Gru''ner a.o.: Analysis of RNA sequence structure maps by exhaustive enumeration I-II. Monatsh. Chem. 127 (1996), 355-374, 375-389. I. Hofacker/Peter Schuster/Peter Stadler: Combinatorics of RNA secondary structures. Discr. Appl. Math. 88 (1998), 207-237. I. Hofacker a.o.: Fast folding and comparison of RNA secondary structures. Monatsh. Chemie 125/2 (1994), 167-188. P. Hogeweg/B. Hesper: Energy directed folding of RNA sequences. Nucl. Ac. Res. 12 (1984), 67-74. M. Huynen/Peter Stadler/W. Fontana: Smoothness within ruggedness - the role of neutrality in adaptation. Proc. Nat. Ac. Sci. USA 93 (1996), 397-301. G. Joyce: Directed molecular evolution. Scientific Am. 267/6 (1992), 90-97. R. Lu''ck/G. Steger/D. Riesner: Thermodynamic prediction of conserved secondary structure - applicaton to the RRE elements of HIV, the tRNA-like element of CMV, and the mRNA of prion protein. J. Mol. Biol. 258 (1996), 813-826. N. Maizels/A. Weiner: Peptide-specific ribosomes, genomic tags, and the origin of the genetic code. Cold Spring Harbor Symp. Quant. Biol. 52 (1987), 743-749. A. Muto a.o.: The organization and evolution of transfer RNA genes in Mycoplasma capricolum. Nucl. Acids Res. 18 (1990), 5037-5043. H. Noller: Structure of ribosomal RNA. Ann. Rev. Biochem. 53 (1984), 119-... H. Noller: Ribosomal RNA and translation. Ann. Rev. Biochem. 60 (1991), 191-227. H. Noller/V. Hoffarth/L. Zimniak: Unusual resistance of peptidyl transferase to protein extraction procedures. Science 256 (1992), 1416-1419. L. Orgel: Molecular replication. Nature 358 (1992), 203-209. A. Rich/S. Kim: The three-dimensional structure of transfer RNA. Scientific American 238/1 (1978), 52-62. 355 Wolfram Saenger: Principles of nucleic acid structure. Springer 1984. Peter Schuster/W. Fontana/Peter Stadler/I. Hofacker: From sequences to shapes and back - a case study in RNA secondary structures. Proc. Roy. Soc. London B 255 (1994), 279-284. 13257 Roman Stocsits/Ivo Hofacker/Peter Stadler: Conserved secondary structures in hepatitis B virus RNA. In Robert Giegerich a.o. (ed.): Computer science and biology. 1999, 73-79.