Dirac quantization of the Pais-Uhlenbeck fourth order oscillator (9 pages)

Deformation quantization of the Pais–Uhlenbeck fourth order oscillator

A Hamiltonian formulation of the Pais–Uhlenbeck oscillator that yields a stable and unitary quantum system

Equivalence of Dirac quantization and Schwinger's action principle quantization

Dirac quantization of the rotator

A Simple Lagrangian Formalism for Fermi-Dirac Quantization

Fermi-Dirac quantization of linear systems