A reference model of disaster relief logistics. To give a deeper explanation of what disaster relief logistic is, a reference model made by (Xxxxxxxx 2006) is introduced. This model, referred as the Reference Model of Disaster Relief Logistics or an international disaster relief system (IDRS), explains the different stages and phases from regional clustering to risk analysis to the point of entry and the actual distribution of aid to the beneficiaries. The model is shortly described. Parts in respect to the research focus are highlighted and the work of (Xxxxxx 2008), (Xxxxxxxx 2006) and (Xxxxxx and Xxxxx X. Xxxxx 2007) are used to describe the model.