Squatter settlements (Topical Term)

Urban land management, regularization policies ... 1995 (Irregular settlements)

Slums of hope? : Shanty towns of the Third World, 1979.

People and housing in Third World cities : perspectives on the problem of spontaneous settlements, 1975.

Abbott, J. An analysis of informal settlements ... 2001.

World Health Organization Website, Sept. 29, 2009 (Informal settlements; these are defined as residential areas where a group of housing units have been constructed on land to which the occupants have no legal claim, or which they occupy illegally; unplanned settlements and areas where housing is not in compliance with current planning and building regulations.)