• PrefaceEngelbrecht, Jüri; Mann, NicholasThe sum of the parts : ALLEA and academies2011 / p. 1-2 https://www.ester.ee/record=b2889444*est
• The sum of the parts : ALLEA and academiesEngelbrecht, Jüri; Mann, Nicholas2011 https://www.ester.ee/record=b2889444*est