Analysis of information sources in references of the Wikipedia article "Visoki srednji vek" in Slovenian language version.
The French historian of the early medieval forest, Charles Higounet, produced a map in the 1960s, which has been much reproduced since, that purports to show the distribution of the forest cover in Europe on the eve of the so-called 'great clearances' (les grands défrichements) between 1000 and 1300.