共 50 条
- [1] SCHWINGER VARIATION PRINCIPLE IN NONSTATIONARY THEORY SOVIET JOURNAL OF NUCLEAR PHYSICS-USSR, 1979, 29 (02): : 281 - 283
- [7] SPURIOUS SINGULARITIES IN THE SCHWINGER VARIATIONAL METHOD PHYSICAL REVIEW A, 1990, 41 (01): : 49 - 52
- [9] TOMONAGA-SCHWINGER EQUATION IN THE BOGOLYUBOV METHOD SOVIET PHYSICS JETP-USSR, 1963, 16 (03): : 660 - 666