Theory and application of Liapunov's direct method
English ed. prepared by Siegfried H. Lehnigk. Translation: Hans H. Hosenthien and Siegfried H. Lehnigk.
- Englewood Cliffs, N.J.: Prentice-Hall, 1963
- 182 p. 24 cm
- Prentice-Hall international series in applied mathematics .