Hass, U. (2004). OECD conceptual framework for testing and assessment of endocrine disrupters as a basis for regulation of substances with endocrine disrupting properties. Nordic Council of Ministers.

Hass, Ulla. OECD Conceptual Framework for Testing and Assessment of Endocrine Disrupters as a Basis for Regulation of Substances with Endocrine Disrupting Properties. Copenhagen: Nordic Council of Ministers, 2004.

Hass, Ulla. OECD Conceptual Framework for Testing and Assessment of Endocrine Disrupters as a Basis for Regulation of Substances with Endocrine Disrupting Properties. Nordic Council of Ministers, 2004.