Consistent Quantum-Classical Interaction and Solution of the Measurement   Problem in Quantum Mechanics
  Supmech, an algebraic scheme of mechanics integrating noncommutative symplectic geometry and noncommutative probability, subsumes quantum and classical mechanics and permits consistent treatment of interaction of quantum and classical systems. Quantum measurements are treated in this framework; the von Neumann reduction rule (generally postulated) is derived and interpreted in physical terms. 
Tulsi Dass