Schr�dinger quantization and variational principles in dissipative quantum theory

Schr�dinger's variational method of quantization revisited

Adding dissipation to the Schr�dinger equation from the quantum-potential viewpoint

Dissipative processes in quantum theory

On the Description of Quantum Dissipative Processes

Rayleigh-Schr�dinger-Goldstone variational perturbation theory for many Fermion systems

Quantum theory of dissipative systems