TY - JOUR AU - L. Rosenberg AU - Larry Spruch BT - Physical Review A DA - Jan-09-1986 DO - 10.1103/PhysRevA.34.1720 PY - 1986 SP - 1720 EP - 1726 T2 - Physical Review A TI - Extremum principles for the determination of relativistic bound-state energies UR - http://link.aps.org/doi/10.1103/PhysRevA.34.1720 VL - 34 SN - 0556-2791 ER -