Volume 51 (1989) no. 3

Table of contents

On the nonrelativistic limit of the Dirac hamiltonian
p. 231-263
Essential selfadjointness of the Weyl quantized relativistic hamiltonian
p. 265-297
On the characterization of physical states in gauge theories
p. 299-321
High frequency waves in relativistic ideal fluid dynamics
p. 323-334