Innovation in Estonian enterprises 1998-2000
Kurik, Silja
;
Lumiste, Rünno
;
Terk, Erik
;
Heinlo, Aavo
2002
https://www.ester.ee/record=b1708024*est
Innovation in Estonian enterprises. Based on the Estonian results of the fourth community innovation survey (CIS4)
Viia, Andres
;
Terk, Erik
;
Lumiste, Rünno
;
Heinlo, Aavo
2007
https://www.ester.ee/record=b2248582*est