The tar archive Optimal_Dynamos.tar contains and index.html file with links
to the run directories for each figure and the two tables of the paper
"The nature of mean-field generation in three classes of optimal dynamos"
by Axel Brandenburg (Nordita) and Long Chen (Durham University) with
the temporary URL http://norlx51.nordita.org/~brandenb/tmp/long_chen.
Corrections and updates are available on the active URL to this tar archive:
https://www.nordita.org/~brandenb/projects/Optimal_Dynamos/