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    STUDIA BIOLOGIA - Issue no. 2 / 2009  
         
  Article:   A CONTINUOUS MODEL FOR THE AGE GROUP POPULATION DYNAMICS.

Authors:  MOHAMMAD REZA MOLAEI.
 
       
         
  Abstract:  In this paper the population dynamics of a society with immigration to the society and from the society is considered. A continuous model for this dynamics is presented. This model has this ability to determine the rate function of those who immigrate to the society, to keep constant the number of population in a special age group.

Keywords: continuous Model, age group, immigration, observer
 
         
     
         
         
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