Citation: M. Nekovee et al., Quantum Monte Carlo analysis of exchange and correlation in the strongly inhomogeneous electron gas - art. no. 036401, PHYS REV L, 8703(3), 2001, pp. 6401-NIL_107
Citation: Wmc. Foulkes et al., Symmetry constraints and variational principles in diffusion quantum MonteCarlo calculations of excited-state energies, PHYS REV B, 60(7), 1999, pp. 4558-4570