Nonlinear elliptic systems with dynamic boundary conditions. Joachim Escher (1992) Mathematische Zeitschrift
Nonlocal quasilinear damped differential inclusions. Benchohra, Mouffak, Gatsori, Efrosini P., Ntouyas, Sotiris K. (2002) Electronic Journal of Differential Equations (EJDE) [electronic only]
Non-unitary scattering and capture. II. Quantum dynamical semigroup theory E. B. Davies (1980) Annales de l'I.H.P. Physique théorique