I have made the template I used for my Licentiate thesis available on
this page to make it easier for others to write their thesis in the G5
format {169x239mm} with some decent margins, when using Latex.
The template uses the Geometry package which makes it possible to
redefine the format to any size that is wanted.
The template in its current form is organized as a collection of
papers, but with some imagination it is not difficult to make it into
a monography.
The template can be downloaded here: thesis-template.tgz
A simple example can be viewed here: thesis.pdf
The template generates a thesis that is in G5 format with 10pt font size. The thesis is then scaled to A4 to which reprints of conference procedings in A4 format can be attached. The whole thesis is then scaled back to G5 size when printed. This is to assure that the fontsize is 10 pt when printed.
The template can be downloaded here: lis-template.tgz
A simple example can be viewed here: licA4.pdf