%0 Journal Article %T Existence and Exponential Stability of Positive Almost Periodic Solutions for a Model of Hematopoiesis %A Alzabut JO %A Nieto JJ %A Stamov GTr %J Boundary Value Problems %D 2009 %I Springer %X By employing the contraction mapping principle and applying Gronwall-Bellman's inequality, sufficient conditions are established to prove the existence and exponential stability of positive almost periodic solution for nonlinear impulsive delay model of hematopoiesis. %U http://www.boundaryvalueproblems.com/content/2009/127510