The 1997 Maastricht Guidelines on Violations of Economic, Social and Cultural Rights build on the 1987 Limburg Principles on the Implementation of the International Covenant on Economic, Social and Cultural Rights and identify the legal implications of acts and omissions which are violations of economic, social and cultural rights. The guidelines were adopted by a group of over thirty experts who convened from 22–26 January 1997 in Maastricht on the occasion of the Limburg Principles' 10th anniversary. Three years later, the Maastricht Guidelines along with the Limburg Principles were reissued as UN document E/C.12/2000/13 by the Committee on Economic, Social and Cultural Rights (CESCR).