1.Bond energies of small metal clusters Karl A. Gingerich, I. Shim, S. K. Gupta and J. E. Kingcade, Jr. Surface Science Volume 156, Part 1, 3 June 1985, Pages 495-503
2.LCGTO MP LSD calculations for the diatomics PdX (X = C, Si, Ge, Sn) Nino Russo1, Jan Andzelm and Dennis R. Salahub Chemical Physics Volume 114, Issue 3, 15 June 1987, Pages 331-338