A new physical characterisation of classical systems in quantum mechanics Holger Neumann OriginalPaper Pages: 225 - 228
External inversion, internal inversion, and reflection invariance Matej Pavšič OriginalPaper Pages: 229 - 244
A contribution to the rainich theory of the neutrino field II J. B. Griffiths OriginalPaper Pages: 253 - 261
Gravitational energy-momentum densities of arbitrary weight G. G. Wiarda OriginalPaper Pages: 263 - 267
Equation of motion for non-geodesic laboratory bodies K. Nordtvedt Jr. OriginalPaper Pages: 269 - 276
