The unitary bogoliubov transformation for a quantized scalar field in a friedman space-time S. A. BonomettoM. D. Pollock Research Articles Pages: 511 - 520
Finite reduced hydrodynamic equations in the slow-motion approximation to general relativity. Part II. Radiation reaction and higher-order divergent terms G. David Kerlick Research Articles Pages: 521 - 543
Shearfree congruences of null geodesies and killing tensors W. DietzR. RĂ¼diger Research Articles Pages: 545 - 562
The Robertson-Walker metrics expressible in static form P. S. Florides Research Articles Pages: 563 - 574
A note on Killing vectors in algebraically special vacuum space-times Roberto CatenacciAnnalisa MarzuoliFranco Salmistraro Research Articles Pages: 575 - 580
On the motion of test particles in the field of a plane gravitational wave N. V. MitskievicS. N. Pandey Research Articles Pages: 581 - 583