Pham Ngoc Thao

Publications in Math-Net.Ru

1. Natural differential operators on manifolds, and boundary value problems that are elliptic in a subspace
   
   Differ. Uravn., 10:10 (1974),  1872–1884
2. Boundary value problems for natural differential operators on manifolds
   
   Differ. Uravn., 6:5 (1970),  877–888
3. Natural differential operators on compact manifolds
   
   Differ. Uravn., 5:1 (1969),  186–198