• Contingent valuation as a tool for environmental economic accounting : case of EstoniaEhrlich, ÜllasEstonian Discussions on Economic Policy2021 / p. 56−70 https://doi.org/10.2139/ssrn.3970916 https://doi.org/10.15157/tpep.v29i1-2.18342 https://www.scopus.com/sourceid/21101042951 https://www.scopus.com/record/display.uri?eid=2-s2.0-85128981306&origin=inward&txGid=608ef2279f08c97d5af8820481c22cbe
• Valuation of ecosystem non-market services : recreational service in EstoniaEhrlich, ÜllasEstonian Discussions on Economic Policy2023 / p. 95-113 : ill https://doi.org/10.15157/tpep.v31i1-2.23581 https://www.scopus.com/sourceid/21101042951 https://www.scopus.com/record/display.uri?eid=2-s2.0-85183180997&origin=inward&txGid=6de1d0056b8cd78cb764344b6c7e986d