• ForewordKeevallik, AndresTUT Innovation and Business Centre : top-science is in the companies2012 / p. 07 : portr https://www.ester.ee/record=b2771124*est
• ForewordVarrak, TeaTUT Innovation and Business Centre : top-science is in the companies2012 / p. 09 : port https://www.ester.ee/record=b2771124*est