• Director's forewordSoesoo, AlvarInstitute of Geology : [annual report] / Institute of Geology at Tallinn University of Technology2002 / p. 5 https://www.ester.ee/record=b1631976*est
• Director's forewordSoesoo, AlvarInstitute of Geology 2001 : [annual report]2002 / p. 5 : fot https://www.ester.ee/record=b1631976*est