[1]Архивная копия от 11 октября 2017 на Wayback Machine Holm, Hans J. (to appear march, 2008): The Distribution of Data in Word Lists and its Impact on the Subgrouping of Languages.
[2]Архивная копия от 5 сентября 2019 на Wayback Machine A possible Homeland of the Indo-European Languages And their Migrations in the Light of the Separation Level Recovery (SLRD) Method — Hans J. Holm
[1]Архивная копия от 11 октября 2017 на Wayback Machine Holm, Hans J. (to appear march, 2008): The Distribution of Data in Word Lists and its Impact on the Subgrouping of Languages.
[2]Архивная копия от 5 сентября 2019 на Wayback Machine A possible Homeland of the Indo-European Languages And their Migrations in the Light of the Separation Level Recovery (SLRD) Method — Hans J. Holm