I am looking for a good book doing classical mechanics and statistical mechanics in terms of the Liouville operator. I have not found a lot on this subject and even books like Mathematical Methods of Classical Mechanics by V. l. Arnold don't seem to cover it. Especially the definition of the operator without the imaginary unit so just
$$L \Gamma = \{H,\Gamma\}$$
seems to be rare.
Really good online sources would be equally appreciated. If I don't have too mathematically versed to understand it, that would be nice as well.