From 2-dimensional surfaces to cosmological solutions A. SzereszewskiJ. Tafel Research Article Pages: 257 - 269
The null energy condition in wormholes with cosmological constant B. Nasr Esfahani Research Article Pages: 271 - 279
The entropy bound and the self-energy of charges in the Schwinger model on black hole backgrounds H. Mohseni Sadjadi Research Article Pages: 281 - 296
Generalizations of normal ordering and applications to quantization in classical backgrounds Hrvoje Nikolić Research Article Pages: 297 - 311
Timelike Killing vectors and ergo surfaces in non-asymptotically flat spacetimes N. Pelavas Research Article Pages: 313 - 326
On the asymptotic character of electromagnetic waves in a Friedmann–Robertson–Walker universe Nader Haghighipour Research Article Pages: 327 - 342
Thermodynamical laws and spacetime geometry T. ChrobokH.-H. v. Borzeszkowski Research Article Pages: 365 - 381
On the impossibility of using the longitude of the ascending node of GP-B for measuring the Lense–Thirring effect Lorenzo Iorio Letter Pages: 391 - 398
Conformal anomaly for free scalar propagation on curved bounded manifolds George Tsoupros Letter Pages: 399 - 406
Noether symmetry in the higher order gravity theory A. K. SanyalB. ModakE. Piedipalumbo Letter Pages: 407 - 417
Palatini formulation of modified gravity with squared scalar curvature Xinhe MengPeng Wang Comments Pages: 419 - 420
Singularity-free cosmological solutions with non-rotating perfect fluids L. Fernández–Jambrina Comments Pages: 421 - 424
On the origin of Kaluza’s idea of unification and its relation to earlier work by Thirring Y. VerbinN. K. Nielsen Golden Oldie Pages: 427 - 433
Petters, A.O., Levine, H., Wambsganss, J.: Singularity theory and gravitational lensing V. Perlick Book Review Pages: 435 - 436