Lead references
J.G. Snijders, E.J. Baerends and P. Ros, A perturbation theory approach to relativistic calculations. II. Molecules. Molecular Physics 38, 1909 (1979)
P.M. Boerrigter, E.J. Baerends and J.G. Snijders, A relativistic LCAO Hartree-Fock-Slater investigation of the electronic structure of the actinocenes M(COT)2, M=Th, Pa, U, Np and Pu. Chemical Physics 122, 357 (1988)
T. Ziegler, V. Tschinke, E.J. Baerends, J.G. Snijders and W. Ravenek, Calculation of bond energies in compounds of heavy elements by a quasi-relativistic approach. Journal of Physical Chemistry 93, 3050 (1989)
