1. Blade and disk vibration;Armstrong,1955
2. D. J. Ewins and R. W. Gregory 1969 to be published.
3. The vibration of bladed disks;Ewins,1966
4. The vibration of bladed disks;Tobias,1957
5. Natural frequencies of bladed disks;Armstrong;Applied Mechanics Convention, Institution of Mechanical Engineers,1966