共 50 条
- [35] SECOND-ORDER RECURRENT SPACE-TIMES IN GENERAL RELATIVITY LETTERE AL NUOVO CIMENTO, 1972, 5 (07): : 563 - 564
- [37] SPACE-TIMES WITH KILLING PROPERTY ANNALES DE L INSTITUT HENRI POINCARE SECTION A PHYSIQUE THEORIQUE, 1979, 30 (04): : 333 - 337