References
- Hara , T. , Yoneyama , T. and Yabunchi , M. 1984 . On the Ultimate Boundedness of Solutions of Ordinary Differential Equations . Applicable Analysis , 1 : 295 – 307 .
- Hara , T. , Yoneyama , T. , Saitoh , S. and Hirano , M. 1986 . Relation Between Ultimate Boundedness and Radially Unbounded Liapunov Functions,Nonlinear Analysis . Theory Methods and Applications , 10 : 471 – 482 .
- Lakshmikantham , V. and Leela , S. 1969 . Differential and Integral Inequalities , New York : Academic Press .
- Lakshmikantham , V. and Leela , S. 1976 . On Perturbing Liapunov Functions . Math Sys. Theory , 10 : 85 – 90 .
- Movchan , A. A. 1960 . Stability of Process with Respect to Two Matrices . Prik, Mat, Mech , 24 : 988 – 1001 .
- Rama Mohana Rao , M. and Sivasundaram , S. 1960 . Perturbing Liapunov Functions and Lagrange Stability in Terms of Two Measures . Journal of Applied Mathematics and Computations , 24
- Salvadori , L. 1972 . Sul Problema Delia Stabilita Asintotica, Rendi Conti del . Acad. Naz. Lincei , 53 : 35 – 38 .
- Yoshizawa , T. 1975 . Stability Theory and the Existence of Periodic Solutions and Almost Periodic Solutions , New York : Springer .