Thormod Johansen

A Riemann solver for a two-phase multicomponent process

Aslak Tveito, Ragnar Winther, R. Winther, 1989 .

The Riemann problem for multicomponent polymer flooding

Thormod Johansen, Ragner Winther, 1989 .

The Solution of the Riemann Problem for a Hyperbolic System of Conservation Laws Modeling Polymer Flooding

Ragnar Winther, R. Winther, T. Johansen, 1988 .