I'm looking for two papers written by H. Ishii:
- Viscosity solutions of nonlinear partial differential equations, Sugaku Expositions 9 (1996), no. 2, pp. 135--152 (English).
- Viscosity solutions and their applications, Sugaku Expositions 10 (1997), no. 2, 123--141 (English).
The library of my institution doesn't seem to be able to find a copy of the issues of the journal.
Does anyone know if there is a copy of these two papers available online?