1. Mathematical problems of the dynamics of red blood cells system;Wazewska-Czyzewska;Annals of Polish Mathematical Society, Series III, Applied Mathematics,1976
2. Linearized oscillations in population dynamics;Kulenovic;Bulletin of Mathematical Biology,1987
3. Oscillation and global attractivity in a periodic delay equation;Graef;Canadian Mathematical Bulletin,1996
4. Global attractivity in population dynamics;Kulenovic;Computers and Mathematics with Applications,1989
5. Global attractivity of the model for the survival of red blood cells with several delays;Xu;Annals of Differential Equations,1998