Information needs of Estonian specialists and collection composition of research libraries : (1967-1996)Kikas, Konrad; Wehefritz, Valentin1997 https://www.ester.ee/record=b1053797*est

The new electronic interlibrary loan system JASONWehefritz, ValentinThe integration of European technological libraries : proceedings of the conference, Tallinn, Estonia, September 6-7, 19941995 / p. 112-116 https://www.ester.ee/record=b1053766*est