General principles of the advanced training of adultsParts, ViiaTheoretical aspects of the transitioning economy : proceedings of the 29th Baltic Conference of Teachers of Economic Theory, Tallinn, May 19-20, 19941994 / p. 33-34 Maksud tulundus- ja mittetulundussektorisParts, Viia; Visberg, Anu-EllArvestuse ja maksunduse aktuaalsed probleemid : konverents1997 / lk. 129-136: ill https://www.ester.ee/record=b1293554*est