Vibrations of ring-stiffened cylindrical shells.

"AFSWP no. 873. Office of Naval Research. Contract no. Nonr-266 (08) Technical report no. 13. CU-13-55-ONR-266 (08)-CE."

Planar vibrations of chlorinated benzenes,

Mode of access: Internet.

On the utilization of the concept of boundary impedance in vibrations of bars

"Materials Laboratory, Contract no. AF 33(616)-5426, Project no. 7360."

Steady state undamped vibrations of a class of nonlinear discrete systems

"Materials Laboratory, Contract no. AF 33(616)-5449. Project no. 7360."