• Dear reader : [preface]Sürje, PeepTallinn University of Technology annual report 20082009 / p. 3 : portr https://www.ester.ee/record=b1968466*est
• Dear reader : [preface]Sürje, PeepTallinn University of Technology : 20052006 / p. 1 : portr https://www.ester.ee/record=b1968466*est
• Dear reader : [preface]Sürje, PeepTallinn University of Technology 20062007 / p. 1 : portr https://www.ester.ee/record=b1968466*est