Sách Phạm Hũ'u

Publications in Math-Net.Ru

1. The support principle in a general extremum problem
   
   Zh. Vychisl. Mat. Mat. Fiz., 18:2 (1978),  338–350
2. Invariance in linear abstract processes
   
   Zh. Vychisl. Mat. Mat. Fiz., 14:5 (1974),  1104–1117
3. Singular controls in discrete systems
   
   Zh. Vychisl. Mat. Mat. Fiz., 10:4 (1970),  857–867
4. The theory of optimal control by discrete processes
   
   Zh. Vychisl. Mat. Mat. Fiz., 10:3 (1970),  607–620