Pogorelenko V A

Publications in Math-Net.Ru

1. Hyperbolic equations in a Banach space
   
   Uspekhi Mat. Nauk, 22:1(133) (1967),  170–172
2. Hyperbolic equations in a Hilbert space
   
   Sibirsk. Mat. Zh., 8:1 (1967),  123–145