Ambiguities on the quantization of a one-dimensional dissipative system   with position depending dissipative coefficient
  For a one-dimensional dissipative system with position depending coefficient, two constant of motion are deduce. These constants of motion bring about two Hamiltonians to describe the dynamics of same classical system. However, their quantization describe the dynamics of two completely different quantum systems. 
Gustavo Lopez, Xaman-Ek Lopez and Gabriel Gonzalez