TY  - BOOK
AU  - Kopeykin,Yu D
TI  - FORMULATION OF PROBLEMS OF FINDING STRESS FUNCTIONS WITH THE AID OF BIHARMONIC POTENTIALS
U1  - NASA 
PY  - 1965///
CY  - 
PB  - Nasa, Washington, D.C.
N1  - Bound With Nasa Tt F-401-408,410
ER  -