John Cairns and Patricia L. Foster, "Adaptive Reversion of a Frameshift
Mutation in Escherichia coli", Genetics 128:695-701, August 1991.
John Cairns, Julie Overbaugh and Stephan Miller, "The origin of mutants",
Nature Vol. 335, 8 September 1988, p. 142-145.
John Cairns, "Can a Bacterium make a Mutational Choice?" ASM News Current
Topics 54(11), November 1988, p. 597.