• International programmes2005 https://www.ester.ee/record=b2407593*est
• International programmes2006 https://www.ester.ee/record=b2407593*est
• International programmes2011 https://www.ester.ee/record=b2407593*est
• International programmes2009 https://www.ester.ee/record=b2407593*est
• International programmes2008 https://www.ester.ee/record=b2407593*est