The link to the paper is provided for your convenience.
The Molecular quasi-species
Eigen M ; McCaskill J; Schuster P
Advances in Chemical Physics, (1989) Vol. 75, 149-263. http://www3.interscience.wiley.com/cgi-bin/summary/114181861/SUMMARY
New concepts for dealing with the evolution of nucleic acids.
Eigen M
Cold Spring Harbor Symposia on Quantitative Biology, Vol. LII. Evolution of
Catalytic function. Cold Spring Harbor Laboratory: Cold Spring Harbor, New
York, USA. 1987. 307-320. http://symp