Reference

Wolf Sixl, E. Marh, B. Sixl-Voigt, Z. Sebek, Z. Bencko, M. Daniel, M. Mikulaskova, M. Mikulasek, B. Rosicky (1995): Contribution to Hygiene and the environmental health problems in different regions in Africa (Urban region in Nigeria, Rural region in South-Sudan and Cape Verde Islands regions) in slums (Garbage Place) in Egypt (Cairo) and refugees camps in Algeria – unbekannt – : 78 - 81.