Séminaire Lotharingien de Combinatoire, B29g (1992), 9
[Formerly: Publ. I.R.M.A. Strasbourg, 1993, 1993/033, p.
M. Kuzma and B. Lulek
The Mac Lane Method of Construction and Classification of
Extensions of Cyclic Groups by Their Automorphism Groups
The Mac Lane method has been applied to the construction of the second
cohomology group in the extension C12 x Aut C12. The
method simplifies significantly the difficult problem of construction of
nonequivalent extensions and allows to investigate their structure.
The following version is available: