IslamWorld http://www.islamworld.net/ Islamic Resources - problems en Shakawa Wa Hulool - Problems and Solutions http://64.233.169.104/search?q=cache:PKU1-Vaazk4J:www.islaam.com/books/Cproblems.doc Why Calamities and Destructions are Happenning to Muslims? http://www.quraan.com/index.aspx?&tabid=31&artid=42